Went to WDW last May , myself and another smoker in our party.
We were careful to only smoke in designated areas and there was really no problem. There are plenty of areas to smoke. Most of them are off the beaten path, and nice and shaded. We did get a non smoking room because to be honest I'm a smoker and I think the smoking rooms stink! We just stepped outside to smoke away from others.
It was really pretty easy to be considerate and not have a nic fit at the same time.