If you enjoy your cruise-ship vacation, the odds are good you'll want to book another one in the future. It may be in the near future, or it may be in the far future, but it is likely to be within the next couple of years if you're anything like the typical passenger. The cruise companies know this, so they make it as easy as possible for you to stick with their fleets instead of going home, checking out the competition, and, well, jumping ship. It's time to pack up, assess your experience, and start thinking about your next trip.