---
title: "Small Group vs Large Boat: Santorini Boat Tour Group Sizes Compared"
date: 2026-10-31
canonical: https://boattoursantorini.com/santorini-boat-tour-group-size/
---
**Semi private boat tours santorini** fill a real gap between a big shared catamaran and a fully private charter, putting a smaller group on a shared boat rather than packing it with forty strangers or buying out the whole vessel yourself. Here's what I'd actually do with that middle tier: book it specifically when crowding at stops like the hot springs bothers you, but a private boat's price tag doesn't.

I'll compare the three real group size formats on this route, shared, small-group or semi-private, and fully private, by what you actually get at each one and who each option genuinely suits. For the specific product that fits this semi-private tier best, my [catamaran vs traditional boat page](/catamaran-cruise/catamaran-vs-traditional-boat/) covers how vehicle type interacts with group size, and if you're traveling with kids, my [family boat tour page](/family-boat-tour-santorini/) weighs group size against family comfort specifically. Since price shifts meaningfully between these three formats, I'd also **[sort every Santorini boat tour by how many people you will share it with](/tours/)** before picking a size.

## What Counts as a Shared Group Tour?

A shared tour is the standard, most common format, you book a seat on a boat that also carries other travelers and families, often dozens of people depending on the boat. The [Santorini Luxury Catamaran Day Cruise](/tours/santorini-catamaran-day-cruise/) runs this way, and it's the format most first-time visitors book without thinking twice about group size at all.

My honest take: for most travelers, a shared cruise is genuinely fine. The stops, the hot springs, the beaches, are spacious enough that a bigger boat doesn't ruin the experience, it just means you're sharing the deck and the swim spots with more people.

## What Does Semi Private Actually Mean Here?

Semi private, sometimes marketed as small-group, means a noticeably smaller passenger count on a boat you're still sharing with other travelers, not a boat you've booked exclusively for your own group. The [Santorini Catamaran BBQ and Hot Springs Cruise](/tours/santorini-catamaran-bbq-cruise/) is the clearest example of this format on this route, deliberately keeping numbers lower than the bigger catamarans and visiting a quieter stretch of the hot springs as a result.

I would not confuse semi private with fully private. You're still sharing the boat with strangers on a semi private tour, the difference is simply fewer of them, which translates into less crowding at the swim stops and a bit more deck space per person.

## What Do I Actually Get for the Semi Private Premium?

The real benefit is less crowding, not more inclusions. A semi private cruise typically costs somewhat more than the biggest shared catamarans, but you're paying for a calmer, less packed version of essentially the same itinerary rather than a meaningfully different meal or longer route.

My honest take: I'd pay the semi private premium specifically for the hot springs stop, since that's the single spot on most itineraries where a big shared boat's crowd is most noticeable, and a smaller group genuinely changes that experience for the better.

## How Does Fully Private Compare to Semi Private?

A fully private charter means you book the entire boat and crew, with nobody else aboard outside your own group, which is a completely different proposition from semi private's smaller-but-still-shared format. My [private boat tour pillar](/private-boat-tour/) and [private boat tour cost page](/private-boat-tour/private-boat-tour-cost/) cover that upper tier in detail, including real pricing that runs noticeably higher than either shared or semi private options.

I would only recommend fully private over semi private if total privacy, not just less crowding, genuinely matters to your trip, a honeymoon or a special occasion, for instance, since the price jump between the two tiers is real and meaningful.

## Which Format Is Best for a Couple?

For most couples, I'd lean toward semi private over fully shared if the budget allows it, since the smaller group makes stops like the hot springs feel noticeably more relaxed without the full cost of a private charter. If it's a honeymoon or an anniversary specifically, my [private sunset cruise page](/sunset-cruise/private-sunset-cruise/) covers when I'd actually justify going fully private instead.

My honest take: I wouldn't default straight to fully private just because it's a special occasion. Semi private gets you most of the calmer, less crowded feeling at a meaningfully lower price, and that trade-off is worth considering before assuming you need the whole boat to yourselves.

## Which Format Suits a Family With Kids Best?

A shared or semi private tour generally works well for families, since the larger boats tend to carry more life jackets and flotation gear in a range of sizes, and semi private's smaller crowd makes it easier to keep track of kids at swim stops. My [family boat tour page](/family-boat-tour-santorini/) goes further into age minimums and safety gear specifically.

I would lean toward semi private over a big shared boat for a family with younger kids, purely because a smaller, calmer group makes supervising children at the hot springs or during swim stops meaningfully easier.

## Does Group Size Change the Route or Stops?

Not usually in a major way. Semi private and shared cruises on this route generally hit similar core stops, Red Beach, White Beach, and the hot springs, though a semi private operator sometimes routes to a quieter stretch of a popular stop specifically to preserve that smaller-group feel.

My honest take: I wouldn't expect a dramatically different itinerary just because you've booked semi private. The real difference is how crowded each stop feels, not which stops you visit.

## Is Semi Private Worth It If I'm Traveling Solo?

Possibly, if a quieter, less chaotic boat genuinely improves your experience, but I'd weigh the cost difference carefully for a single traveler specifically, since the per-person premium hits harder when you're not splitting it across a group. A standard shared cruise is often the more cost-effective choice if crowding isn't a major concern for you personally.

I would book semi private solo mainly if you've already done a big shared catamaran cruise before and know crowding genuinely bothers you, rather than as a default first choice.

## How Do I Tell If a Listing Is Semi Private or Just Smaller?

Check the listed group size or maximum passenger count directly on the tour page, since the term semi private isn't always used consistently across every listing. A boat explicitly built for a smaller fixed number of passengers, rather than a large catamaran, is your clearest signal that you're looking at a genuine semi private format.

My honest take: I'd read the actual passenger capacity rather than trusting marketing language alone, since one listing's small group can mean something different from another's.

## What's the Price Gap Between the Three Formats, Roughly?

Shared cruises on this route start lower, semi private runs a noticeable step up, and fully private charters cost substantially more again, often several times a shared seat's price since you're paying for the whole boat rather than one seat on it. My [prices page](/santorini-boat-tour-prices/) lays out the real per-person and per-boat figures across every format if you want exact numbers before deciding.

I'd think of it less as three evenly spaced price points and more as a bigger jump between semi private and fully private than between shared and semi private.

![illustrated map of Santorini highlights for Small Group vs Large Boat: Santorini Boat Tour Group Sizes Compared, semi private boat tours santorini](/images/blog/santorini-santorini-boat-tour-group-size-2.webp)

## Does Group Size Affect Seasickness Risk?

Not directly, since seasickness comes down to the boat type and sea conditions far more than how many people are aboard. A catamaran's wider, more stable hull design helps regardless of whether you're on a big shared cruise or a smaller semi private one, while a traditional sailboat feels the water more either way.

I would not pick a smaller group specifically to reduce seasickness risk. I'd pick the boat type and route instead, and treat group size as a separate decision entirely.

## Can I Upgrade From Shared to Semi Private After Booking?

Usually not as a simple upgrade on an existing booking, since shared and semi private tours are typically separate listings on separate boats rather than tiers within the same product. I'd cancel the shared booking, if you're still within the free cancellation window, and book the semi private listing fresh instead.

My honest take: I'd decide on the format before booking rather than assuming you can switch later, since treating this as a late upgrade usually means more hassle than booking the right tier the first time.

## Does a Smaller Group Mean a Shorter Wait at Each Stop?

Generally, yes, in a practical sense. Fewer passengers means less time spent waiting for everyone to board, disembark for a swim stop, or get back on board before the boat moves to the next spot, which adds up over a four or five hour cruise.

I'd factor this into your decision if you've found big shared cruises frustrating before, specifically because of how much time gets eaten up by group logistics rather than the stops themselves.

## Is Semi Private Available on Every Tour, or Only Specific Listings?

Only specific listings, not every tour on this route offers a semi private version, so I'd check the stated passenger capacity on each listing rather than assuming the option exists everywhere. The [Santorini Catamaran BBQ and Hot Springs Cruise](/tours/santorini-catamaran-bbq-cruise/) is the clearest semi private option currently bookable here.

My honest take: I wouldn't go searching broadly for a semi private version of a specific shared cruise you've already found, since it may simply not exist as a separate product. I'd treat semi private as its own distinct listing to look for, not a variant of every tour.

## Does a Bigger Boat Mean More Amenities?

Sometimes, yes. The biggest shared catamarans on this route tend to offer a wider spread of food and an open bar, simply because serving a larger group efficiently makes a bigger onboard kitchen setup worthwhile for the operator. A smaller semi private boat can still serve a full meal, as the BBQ cruise shows, but the format leans toward a simpler, more intimate spread rather than an elaborate multi-course menu.

I wouldn't assume bigger automatically means better food, though. I'd compare each specific listing's actual inclusions rather than guessing based on boat size alone.

## Is a Semi Private Cruise Harder to Book Than a Shared One?

A little, simply because there are fewer semi private listings available on this route compared to the handful of large shared catamarans running daily. I'd book a semi private slot further ahead than you would a standard shared cruise, especially for a popular date in peak summer.

My honest take: if semi private is genuinely what you want, I'd lock it in as soon as your dates are set rather than treating it as something you can always find room for closer to your trip.

## How Does Group Size Interact With a Sunset Departure?

A sunset slot on a big shared catamaran means sharing that golden hour view with everyone else aboard, jostling a little for the best spot on deck as the light changes. A semi private sunset option, which my [private sunset cruise page](/sunset-cruise/private-sunset-cruise/) covers for the fully private end of that spectrum, gives you noticeably more room to actually settle in and watch the sky without competing for a railing spot.

My honest take: sunset is the one time of day I'd weight group size most heavily in my decision, since a crowded deck genuinely detracts from what's otherwise the best moment of the whole cruise.

## Does Booking Early Change Which Group Size Is Available?

Yes, in practice. Semi private and private options tend to have fewer total slots per day than the biggest shared catamarans, so booking early matters more for these smaller-group formats than it does for a standard shared cruise, which usually has more capacity to absorb late bookings. I'd lock in a semi private or private slot as soon as your travel dates firm up, rather than waiting and hoping space opens up closer to your trip.

I would not leave a semi private booking for the last minute if your heart is set on that specific format, since a shared cruise is almost always the easier one to find room on with short notice.

## My Honest Take on Picking a Group Size

For most travelers, I'd start with a standard shared cruise and only step up to semi private if crowding at a stop like the hot springs genuinely matters to you, since that smaller-group premium is the best value upgrade on this route. I'd reserve fully private for a specific occasion or a genuine need for total privacy, since that's where the real cost jump happens.

## Frequently Asked Questions

### What does semi private mean on a Santorini boat tour?

A smaller passenger count on a boat you're still sharing with other travelers, distinct from a fully private charter where you book the entire boat for your own group.

### Is semi private more expensive than a shared cruise?

Yes, typically a noticeable step up from the biggest shared catamarans, though still well below the cost of a fully private charter.

### Is semi private worth it for a family with kids?

Often, yes. A smaller group makes supervising children at swim stops easier, and most semi private boats still carry a full range of flotation gear.

### How do shared, semi private, and private boat tours differ in Santorini?

Shared puts you on a large boat with many other travelers, semi private keeps the group noticeably smaller, and private buys out the entire boat for just your group.

For general background on the island these tours sail around, the [Wikipedia page on Santorini](https://en.wikipedia.org/wiki/Santorini) covers its geography and volcanic history.

[every Santorini boat tour by group size and price →](/)