We stayed at AS Music back in 2015 and the rooms looked recently renovated. They were much nicer than I expected based on the more negative reviews I had read. We enjoyed our time there, which was a slower part of the year, but that seems like when you will be going as well. I would suggest requesting a building close to the lobby/transportation area as possible. We stayed in the Jazz section which was fairly close. But there are buildings that are FAR away from the bus stop. After a day at the parks, I couldn't imagine having to walk a quarter-to-a-half mile to get to my room. If you have a car, it might be worth it to drive to MK, as it is a bit of ways away. But then again, it shouldn't be all that bad in September regarding traffic, etc.