Specific question: I'm looking at a July 2018 cruise with a nonrefundable deposit. If I pay the deposit for four people in one cabin, and it turns out the 4th person can't go, what happens to that deposit? Do I lose it or does it go toward our remaining balance? Most questions I've seen on the nonrefundable deposits involve people switching dates or ships, which I would not do. It's just a matter of 4 people vs. 3.