I agree with the number of about 20 people per boat. They had a covered area where the "driver" is, and there are a few seats there. There's an area "below" where the bathroom is (very limited!) and open seats on the main deck by the driver. Then there are seats on the cover part that you access by ladder (going up over the "driver"). They don't let kids up there without parents, and don't like you going and coming while you're moving, but those seats are pretty cool!