The boat held 20 guests, 2 naturalist guides, and 10 crewmembers. There was a sundeck, a dining room, and a lounge with DVDs to watch (which we didn't) and fish identification books (which we looked at every time after going snorkeling). Each day was action-packed: breakfast at 7:30, a walk in the morning followed by a snorkeling opportunity, sailing to some place nearby during lunch, another walk and another snorkel opportunity in the afternoon, and then sailing to a completely different island overnight.