Some sort of trail mix or other snackables can help energy levels between dives, especially if you don't feel like going back to your room (you won't!). We also freeze and bring a sealed pkg or 2 of sliced roast beef (like from COSTCO--also a good place for trail mix, dried "Fruit Medley" etc) in our checked luggage, since sandwich fixin's can be pricey. The breads available at Cultimara Supermarket are wonderful though (!!) and if you are cooking they are well stocked, as is the Warehouse. Oh, bring coffee if you drink it--not much available that is drinkable IMO. Maybe a spare mask, in case you get tumbled in some waves? (not likely but...) Oh and bring a good attitude--it will come right back to you from the locals! // ww