I was there this past Sunday (9/7). We didn't make it to MK until 9:45 AM (almost 2 hours after EE, and 45 minutes after the regular opening.) It was not crowded at all. We walked onto Pirates and rode it twice, then Haunted Mansion was a walk on and rode it twice.
The only part that was at all crowded was Fantasyland. But even then the line waits were short. We waited 10 minutes for Small World, Snow White, Winnie, and Peter Pan.
Alien Encounter was a walk on and Buzz was a 5 minute wait both times we rode it. Space Mountain was a 5 minute wait. Splash Mountain was a walk on in the morning but when we rode it at 2:30 PM there was a 10 minute wait both times we rode it.
Bev