If you're about to sail on a Norwegian cruise, then it's likely that you've already seen mentions of the drink packages for sale -- or included in the 'More at Sea' offer. You might be wondering how they work and if they are worth the cost. Put simply, the packages make it easy to enjoy drinks on the cruise ship without worrying about a bill. You sign up for the package and pay one set daily amount. Then you can drink almost anything on the ship -- and as much as you want -- without having to...