Talked to a friend last night who is going on the Noordam 24 day Trans-Atlantic and she said something about no smoking in the Casino until after 10:30pm.
Each ship seems to be different, and I think each cruise seems to be different......you can be on the same ship and one week it's NO smoking and the next it could be smoking or 2 nights NO smoking.
We were on the Zuiderdam recently, but I can't remember if there was smoking or not.