For many, part of the appeal of taking a cruise is all of the fantastic shows they have on board. However, most of these shows will require that you book a reservation before you show up. And if you're anything like us, then odds are you're not very good are remembering to do things like that. Luckily, there are always going to be a couple of people that book and decide not to go.
Because of this, it's usually worth going to the show and asking to see if you can get it. If there are any empty seats inside, then there shouldn't be a problem.