Originally Posted by
Schnit
As for the drink package, I think you need to look at it as a math equation. For example, say you would drink 6 drinks per day on sea days, and 3 on port days. Multiply them by the drink prices (try googling to see if you can find), and see what your total comes out to. Then compare it to the price of the drink package and see what it is worth. Its really that simple (although a complex equation since not every drink is the same price)
Good advice. I would also add that, when doing the comparison, the baseline should be what you would NORMALLY drink on sea days and port days in the absence of a drink package. (Often passengers with a drink package may drink more than they normally would in order to maximize the value of the package, in which case the elevated consumption level should obviously not be used as a baseline for comparison.)