The last two times I went, I used a fanny pack. I carry a backpack everwhere I go during the year so the thought of having to carry it during vacation doesn't appeal to me. With the fanny pack I carry just what I need, cash, cards, id, and a couple of roles of film. Any purhase you make you can have them send it back to your resort, if you're staying on property. As for the water bottle, my girlfriend has a water bottle strap for her's. I don't know where she bought it, but you could find some kind of water bottle strap and throw it over your shoulder.