7. Pillow Choices

If you love goose down, are allergic to feathers, or prefer memory foam, no worries. If you’re sailing on Silversea, there’s a pillow menu that lets you customize your sleeping style. (Silversea will also allow you to choose the firmness of your mattress.) On Crystal Cruises, allergy sufferers get allergen-free pillows — and more — in the hypoallergenic Deluxe PURE Staterooms, which are the only accommodations of their kind at sea. You’re sure to have a better night’s sleep.