In 2006 we went snorkeling in St. Thomas and the guy running the excursion told us up front how much we should tip and it was a LOT of money. Can't remember off hand the amount all I remember was my husand and I looking at each other thinking, "you have to be kidding me" We are a family of 6 and if I had to guess, I think they wanted something like 60.00 from us. we didn't even have that much cash on us. I think Disney should tell people to be prepared to tip on their excurions and how much.