What not 2 miss at ports

[mickeymousedabomb]

With all the great things to see and do while at port what are the things you suggest not to miss? It will be myself and 2 DDs age 16 & 10 at that time. It will be November 2012 these are the ports of call
Montego Bay
Grand Cayman
Cozumel

[MNNHFLTX]

There is a zipline tour in Montego Bay that my niece and her family (include two daughters, ages 11 and 15) just did a couple of months ago and raved about. I can also personally recommend the Stingray City excursion in Grand Cayman. It's a surreal experience to feed this strange and beautiful creatures!