The reason there are so many different replies, is because guest book under different fare codes, and cancel at different points. If you would call into Carnival, you could say your husband might not show. You would like to know what the penalty is. Typically this close to sailing you would lose his deposit. It is possible that this fee could be waived since you are remaining on the booking.This is what typically happens. The Casino dept could tell you all of this easily. No one would cancel any passenger just to find out this answer.