We are set for two ports and need to make our plans for two more. Which beaches are best for a family with two young kids (5 and almost 2) on Grand Cayman and Castaway Cay? Should we reserve anything in advance or just go when we arrive? Is there anything we shouldn't miss out on doing at either of these ports? Any amazing non-beach activities? Grand Cayman is a short stop (about 4.5 hours) and Castaway Cay is more like 8 hours. Any help will be appreciated! You guys gave me great info and we're now booked for our other ports thanks to these boards!