I wouldn't worry - I'm a newly (May of 2000) non-smoker and when we were in the South Wing (room 5111 - a fantastic room), I didn't smell any smoke whatsoever. We loved our stay there - we were on the 1st floor so we got to feed the ducks, we could walk out our patio door and be within 20 steps of the pool, we were so close to the Tower and all the goodies there, and the room was huge. They are big enough that, if Disney wanted, they could fit another Queen size bed in there. I think you will love your stay there, especially with your kids. Enjoy.