7. Get your stateroom decorated.

Regardless of the line you’ve chosen, you can prebook treats such as a bottle of champagne or a plate of strawberries, and have them waiting for you and your travel companion. Or, do something completely different and order cabin decorations (from $25 on Carnival, $49 on Royal Caribbean). It may sound cheesy, but welcome banners are sure to put a smile on the face of your cabin mates, especially the littlest travelers, and the signs on the door will help you find your cabin all week long.