Do bring off or some sort of bugs replent. Don't lay on the beach, as the sand fleas will bite you. You can put your beach chair out in the water a bit and you'll be fine. Make sure you put the bug spray on you legs before you walk around. again, the bugs will get you.
Try to get a room closer to the dive op. It is easier to get back and forth that way, and a bit quieter. FI is a nice place, more european then other resorts in the area in my opnion. Really nice dive folks there. You might also want to bring some imodium if your not used to traveling. I sometimes get problems when I travel to places like that.
Take an eveing and go check out the West end or do it on your last day when you can't dive. Skip the Canopy tour. Too much walking up hills in the heat. Any other questions? i alsways get a beer at the airport first thing, kinda starts the vacation for me. SALVA VIDA baby!!