Private tours include exclusive use of a boat with a skipper, so there are no other passengers besides you and your group. The maximum number of passengers depends upon the type of boat you book and ranges from a minimum of six to a maximum of 12. Private tours include a general itinerary with lots of flexibility for stops for swimming and snorkeling, docking to spend free time on land exploring local sights and shopping at boutiques, or stopping for lunch.
Group tours have a set itinerary and you share the boat with other passengers, ranging from seven to 40-50, depending upon the tour. Classic Capri small-group boat tours include 12 passengers.