We attended the July 26th show. We loved it! My suggestions would be to be in line before 7:00, waiting for the rope to drop. They only serve appetizers from 7:00 to 7:30. We didn't get inside until after 7:00. By then, all of the tables were taken (not that many), and we had to eat really quickly in order to get seats for the show.
The show was fabulous. I originally paid for the premium seats, but after seeing the chair set-up, I downgraded to regular seats. We could see the show OK, not great.
The dinner afterwards was wonderful. Lots of tables, lots of food stations, lots of drink stations. Characters out and about, and night time entertainment.
When we left around 10:30, the bus lot was absolutely filled to the brim with buses, just waiting for guests to take back to Disney resorts. We had a bus all to ourselves back to OKW!
I loved the show and hope that Disney continues it past August. I got a survey the next day from Disney, and that was one of the questions - would I go again if they extended it.