This cruise secrets exposed series is designed to help you get the most out of your cruises. One of the most expensive activities on board is drinking, especially adult beverages. It is one of the many ways that the cruise line will get more of your money out of your traveling packet. Even if you are a moderate drinker, you can easily rack up a bar tab in the hundreds. Bring along a party person and you could be looking at four figures by the end of your journey.