7. Plan ahead for the pirate party.

Disney cruises have a pirate theme night, so (if you want to play along) be sure to throw whatever you have at home — Eye patches left over from Halloween? A striped top? A red bandana? — into your luggage before your vacation. Of course, you can also buy a few things in the gift shop when you arrive if suitcase space is precious and you still want to take group pictures and, you know, be able to tell each other to walk the plank.