I am taking the Disney Fantasy for the Merrytime cruise in December with my 3 (close to 4) and just turned 6 yr old. We are doing the Dolphins in Cozumel and not sure what to do in Grand Cayman. Rum Point beach is sold out. We could do White House, but that looks a little boring? Is there something outside of Disney that is fun or even just a nice beach kids would find interesting? All the Disney activities that allow 3 yr olds seem to be house tours or 2 hr raft rides and I think she might get restless. Thank you!