Hi Stephaniec, welcome to Cruise-Chat. By using your "Find" feature in the upper left hand corner and typing in your ports, you can find all the posts made about the ports in question. This might help you find something interesting.
St. Thomas-Magen's Bay, Coki Beach, Sapphire Beach, catamaran sail/snorkel. St. Maarten-Maho Beach, shopping, America's Cup Yacht Race. Aruba-catamaran sail/snorkel, just about any beach there-we went to Palm Beach the last time we were there. Curacao-catamaran sail/snorkel, Curacao factor tour, tour if the island. San Juan-Ponce, Old San Juan, Bioluminescence tour. Best wishes for your upcoming cruise and once again, welcome aboard!