I've not been there, reviews from another cruise site were mixed. Most said it was rather "wild" a place where some of the crew members from the ships go to party.
Hope this helps!
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Carnival Fantasy 2004
Carnival Fantasy 2005
Carnival Sensation 2007
Carnival Imagination 2008
Carnival Destiny 2009
Carnival Valor 2010
Carnival Freedom 2011
Carnival Miracle 2012
We were there in February when we sailed on the Conquest. It was $35 for a day pass. That included all your food and drinks. Snorkelling equipment was also included . Snorkelling was great - we saw lots of beautiful fish. There is even a sunken plane from a James Bond movie there that brings in the fish,
We did see some of the crew from the ship there, but it certainly wasn't a wild spot. There was a lot of families there that day.
It was a 5 minute walk from where we docked, so that was a big advantage.And the food and drinks were great. We loved it there.