Just returned from 7 day on the Liberty. Formal nights were the 3rd and 6th nights. This was our third cruise and by far the most disappointing. All have been on Carnival and We usually book our next as soon as we return. We were planning to take another with my sisters and their families who have never cruised. It definitely won't be with Carnival. Maybe it was a fluke and your cruise will go well. I certainly hope so!