I think the rule is that the drill must be done in 24 hrs or when it leaves to a
non - U/S port. The reason I say this is we were on a Costa ship years ago.
From Fort Lauderdale a 7 day carribean cruise. At 4 p.m. we left the dock and I felt the ship moving. I turned to my wife and said why didn't we do the life boat drill? She and I just did not know and all the other passengers were asking about that first evenig. At that point we had been on over 10 cruises.
But here is what happenend. Out first Port was Key West. That is when it happened. It was aroung 9 a.m. So I guess the moral of the story is you just don't when it will happen. Ed