newyorkers, all the information you could possibly want/need is available in Lan Sluder's book, "San Pedro Cool". Don't leave home without it. It's the best $14.95 investment you can make.
Tons of info covering every subject relative to your trip. (I'm not suggesting you won't get good advice here on this message board, but the book covers things you won't think of asking.) Have a great trip.
PS: for the mainland, Guide to Mainland Belize by Lan Sluder, Belize Giide by Paul Glassman and many other good ones available.