Because the Exumas are all about the water, a high-quality dry bag is your most important accessory to keep cameras and towels safe during boat island-hopping tours. Pack reef-safe sunscreen and a long-sleeved rash guard; the sun reflects intensely off the white sand and pale blue shallows. You will definitely want your own snorkel mask and fins for spontaneous stops at hidden reefs, along with water shoes for exploring rocky grottoes. Since many of the best experiences involve feeding the local wildlife, keep some small cash on hand for "pig food" or shark entrance fees. Finally, bring a reusable water bottle and plenty of snacks, as many of the smaller cays are beautifully uninhabited with no shops in sight.