Hey im taking a 7 day cruise for the first time

and i was wanting to go 4 wheeling on one of the islands but im not sure if the islands that we are stopping at have this activity. if anyone knows let me know. the islands are; CocoCay, St Thomas, and St Maarten.
also any other recommended activity's to do on some of the islands will be very much appreciated.
Cruise sail date: 04/22/12