Smokers have enabled spaces on most cruises. There are normally smoking rooms on the ships. In some cases, it is also possible in some outside decks. It is important not to throw away butts.
In some companies is forbidden to smoke in all their ships and in other there are areas only for smokers allocated in the outside decks.
In some companies is not allowed to smoke during their own excursions.
Similarly, some companies only enable areas for smoking cigars or pipes and other companies allow to smoke in all private balconies. Usually smoke in the cabins or staterooms is not allowed, whether or not they have balcony.
There are also companies that do not allow to smoke in the casino. In all cases, smoking in not allowed areas will cause a fine directly charged in the passenger card.