Cruise fares include your cabin, most meals and entertainment options, and of course your transportation from port to port — but you have to account for a lot more when budgeting your trip. Once you've picked your ship and itinerary, you'll want to take a look at the big picture to make sure all those extra costs don't add up to a lot more than you were planning to spend on your vacation. Here are five things you should absolutely plan out before you book: