We just got back from CocoCay. We rented equipment and got the vests..and we brought extra equipment. Lots of people did not wear the supplied vests and some went on their own with no vests. Its a good wswim out to the plane though so its not a bad idea unless you are a pretty good swimmer.
Carnival Fantasy 6/05
RCCL Sovereign of the Seas 4/07
RCCL Navigator 12/07
RCCL Navigator 11/08
RCCL Liberty 7/4/09