Hi Kim,
There is a Margaritaville in Cozumel and in Grand Cayman. The one in Grand Cayman is right across the street from where your tender drops you off. If you go upstairs there is a pool with a slide. I didn't go in the one in Cozumel, but it's not from from the Punta Langosta pier which is right downtown. There is not one in Honduras and I didn't see one in Belize. Enjoy your cruise!
Happy Sailing!!

Future Cruises:
Carnival Legend - September 2009
Past Cruises:
Carnival Imagination - September 2008
Carnival Legend - October 2007
Carnival Imagination - January 2007
Carnival Imagination - September 2006
Carnival Fascination - May 2005
Carnival Imagination - November 2004
Holland America Zuiderdam - May 2003