We were in Ambergris a couple of weeks ago. We bought our perishables (bread, milk, eggs, lunch meat, etc.) on the island, but brought some cereal and snacks from home. The only thing that I would do differently next time is to bring some small ketchup, mustard, and mayo packs (like the kind you get at the fast food window). It seemed wasteful to buy a whole condiment bottle just for a week, but then our sandwiches were kind of dry. If you plan to go fishing, and then cook the fish in your room, you may want to bring some spices from home. Have a great time, leave the jewelry and fancy clothes at home!