Well, I don't think this passenger is going to be happy if he MUST smoke during dinner. None of the major cruise lines allow it. I also don't know of any airlines that allow smoking during flights anymore. (Expect maybe Nippon Airways, but that may have changed after 9/11 air security changes.
YEs, there are places on the ship that he can smoke to his hearts content, but not in the dinning room.
Carnival Cruise Lines:
Fantasy 90, Celebration 95, Victory 05, Conquest 05, Spirit 6/06, Freedom 6/08, Holiday 7/08, Victory 6/09, Valor 9/09, Dream 6/10, Splendor 8/10,Conquest 8/11,Magic 11/11,Triumph 4/12,Spirit 7/12,Freedom 11/12, Triumph 2/13 - The fire cruise
NCL Dream October 2006, RCCL Mariner OTS June 2007, Celebrity Silhouette 2013