I think most smokers use common sense...and most of them are polite. There are rude people everywhere.
The cruise industry makes most of it's income off European travelers..and Europeans are much heavier smokers than Americans and I know for a fact that when there's a cruise going out with alot of Europeans on them...they will smoke EVERYWHERE! It's just their culture and it's not frowned upon in other countries.
carnival isn't under US registry and even if the whole USA banned smoking, the cruise lines wouldn't have to comply.
I think it's a good idea that the Paradise is non-smoking and it will be nice when more non-smoking ships are put into service. Until the cruise lines start getting most of their revenue from non-smokers...the ships will accomodate smokers.
Now, be nice and the smokers will be nice to the non-smokers...and even allow them on their smoking ships! <LOL> (just joking)
I also doubt it very very much that any non-smoker will die from going on a cruise with the smokers for a few days.
I would like to request that any cruiser who wears Ralph Lauren perfume to please not wear it in the enclosed areas when I'm there...it makes me puke...and that can only make YOU uncomfortable. (just kidding again!)
Bon Voyage and keep it light...er lit...er...have a good time!