Glad to see a positive review. Had the same cokage issue on our last cruise. Asked the CD about it. Was told the policy is a $10 fee, they do know that some waiter will open wine for you without charging it. And that with anytime dining yes it will be hit and miss on if you get one who folllows the policy or not. He did add that ussaly it is newer waiter who follow it as they don't know that they won't get burned for not.
2004 Carnival Imagination Grand Cayman/O.R. Jamica
2006 Carnival Valor Eastern Caribbein
2008 Carnival Liberty Exotic W. Caribbein
2010 Carnival Spirit Mexican Rivera
2012 Carnival Freedom Exotic W. Caribbein