if you mean the restaurants "around" Pleasure Island, like Planet Hollywood, and Bongos, then NO, you don't have to pay for that.
But, the last time I was there, to get "inside" of Pleasure Island, there is one flat rate.
Whether you just walk around and don't go to one club, you still have to pay that one rate to go "inside" Pleasure Island. Because once you are in there, you can just walk around, or go to any club, jump from club to club, etc, without paying extra for each one.
Jen