We went the week of July 14 and arrived there exactly 1 hour and 45 minutes early for the 9 pm show. We were right in the center sections. At 1 hour 15 minutes the last section on the left was being filled. People who arrived 45-1 hour were filled in and anything less than 45 minutes were standing room. I went to get a water (perfectly fine to save seats- everyone gets up to go to restroom, grab an ice cream during the wait) I had to laugh, a couple was coming in with there kids 15 minutes prior and were complaining they had to stand!! I was there almost 2 hours early and was paying for my daughter to stay at Neverland club, just so my DH and older DD could see show!! I brought little disney figures for DD to play with and then we were entertained by doing the Wave...
If you are with the Fantasmic package you get the far right section, which was also filled up by the 30 minute wait.
I was very impressed after the show, everyone walks in a calm manner to the exits, not at all as crazy as I thought it was going to be with 10,000 people all leaving the same exit. Have fun!!