We were there yesterday and I was surprised by how crowded it was. We went to AK during the day and it was packed! I've honestly never seen it that crowded there. Then we hopped to MK and it was also crowded, but not horrible. After AK, I was braced for MK to be a zoo, but it wasn't THAT bad. It was crowded though!
I agree that a lot of people were probably just there for the long weekend. However, I did try calling for a room next Saturday (10/16) and there wasn't anything at the moderates...