Hi Gayle...
No particular "policy" per se and much like other ships. Smoking is allowed in the cabins and in publc areas with the exception of dining rooms, theatres and spas. For the ships that have spa deck cabins there is no smoking in those and they'll charge a $250.00 reconditioning fee per spa stateroom or suite for guests that do not comply with the non-smoking policy.
In the public areas it is the same as most ships. Smoking on one side of the ship and non smoking on the other. I think there are certain areas of the casino where smoking is not allowed and I have heard that they sometimes have a non-smoking casino night.
Hope that helps :rasta