Ambergris Caye hovers in a vacation sweet spot: just enough amenities to make it exciting, but not so overdeveloped that you’re tripping over flip-flopped tourists. A mangrove swamp is the eye of this white beach island, the largest in Belize, and golf carts are the main form of transportation along the sandy roads. Reef divers drool over the Belize Barrier Reef and the Blue Hole, a 400-feet deep circle of limestone that teems with angelfish, elkhorn coral, cleaner shrimp and stalactites.