Hopefully you will be checking in early and will have time to check out your room before the resort is full. We have run into problems on several occasions with smokers taking non-smoking rooms and I am pretty sure they spent their whole vacationsitting in the room chain smoking. Disney is very good about moving you if there is another room available or they will completely tear down the room (drapes, bedspreads, etc) and also put an ionizing maching in the room for a few hours while you are out. So, hopefully you will get a nice, clean smelling room but if you don't, hold your ground and be firm with them insisting on another room if they have one that is in an area you like or else have them do the tear down. Once they even came in and cleaned the carpeting as part of the process and the room was like brand new when they were done.