Dolphin Shallow Water and Water Park Access was a great time. Some of the best water slides I have ever encountered. The dolphin encounter was quite entertaining and informative and the interaction was quite an experience.
Key West was interesting. We did not do any organized tours. We walked around the island and took pictures at the Soutrhernmost Point marker. The cemetary is quite interesting as well. There are several restaurants off the main strip on Duval Street. Almost every other spot on Duval Street is a bar, not a problem for adult cruisers.