Thirsty? Swim up to an in-water bar for refreshments like white wine (served in plastic glasses for safety) and consider picking up a fresh algae face mask. No cash needed, either: You pay by swiping an electronic bracelet at the bar, then settling the bill upon checkout.
Icelandic fun fact #7: The Icelandic booze of choice is Brennivín, a potato-based, caraway-tinged liquor also known as Black Death (thanks to its whopping 37.5% alcohol by volume). It's tasty with spice and bite, like an edgy cousin of Pimm's. Say skál! when you raise your glass.