Carnival offers passengers the option of buying the CHEERS! drink package. For one set price per day, you can have your run of just about any beverage on the ship — alcoholic or otherwise. Now, this drink package isn’t for everyone. You definitely want to run the numbers on how much you’ll drink before you buy and if you’ll get your money’s worth (see our drink package calculator here). But if you do decide to purchase it, be sure to do so before you sail. Carnival discounts the package $5 per day — or about 9% — if you buy the package online before you board.