Why are you worrying about what "might" happen and focus on the good of what "could" happen, like, you might have a good time. Maybe even a "great" time. Pay the gratuities and enjoy. If things are that bad (doubtly) then they can be removed but to start off your first cruise like that is just bad karma for you! Focus on watching the ocean go by while you read that novel you've been putting off or while you watch an ice sculpting on the pool deck. Smell the roses!!!