I was on the Norwegian EPIC last month. Inside the terminal, there's a place to "register" your wine bottles. It is here that you are charged the corkage fee. If you do not want to pay the corkage fee, they can confiscate your wine bottle and on the last evening of your cruise you can get it back. You aren't charged a fee for it after you get it back and you will have a few hours to drink it, if you stay up for a while. I think it was available after 7 or 8PM.