I would recommend taking a cab (prices negotible there) to Dunns River Falls (You can probably pull it up on line to see it) they have lockers there for rent, take your own WalMart water shoes, towel, waterproof disp. camera) Buy your ticket there. Very inexpensive, a blast to do! Drugs rampant in the city near the port--however, they would only try to offer it to our teens- not us old folks!
Grand Cayman- nice shops near port. We did the sub excursion- would not recommend it. Those who had signed up for the stingray exc. got cancelled due to rough seas that day (which really didn't seem bad to us)