The ships of the Disney Cruise Line are beautiful, and certainly a destination in themselves, however one of the most popular ports of call they dock at is Disney's Private Island, Castaway Cay. Though adults have the option here of heading off to the exclusive Serenity Bay Beach, guests are also encouraged to sign up for some of the fun shore excursions available on the Island. For those wanting a little excitement in their stop on the island, I recommend the Jet Ski Adventure.