Everybody loves scoring free goodies, and cruise lines offer lots of ways to add a little value to your vacation. Sure, you may have to attend an event to score some swag, or embarrass yourself in front of a deck full of passengers. But that's a small price to pay for free stuff, right? Here are few ways to finagle freebies on board, whether it be bottles of bubbly or a mini-spa treatment. Follow our lead, and prepare to reap the rewards ...