My son (9yr old) and I just went last night and had a great time! He leaned over and whispered THANK YOU! THANK YOU! THANK YOU! to me just after the show started, he was so happy!
Our show started at 7:30 and we got in around 6:30, spent about 30 minutes looking at the exhibits and then went to our seats around 7:10. The really popular exhibits were the most crowded (DV, Chewie, Yoda, C3PO) but some were not as bad (guards, blasters, helmets, Plo Koon). There were characters everywhere (Clone Troopers, Boba Fett, Chewie) and it was a bit of a free for all to get pictures with them - just kind of a throw your kid in and go for it!
It did say no cameras but I commented to a friend that I believe they were talking about professionals with zoom lenses, not your average point and shoot.
We had a great time and hope you will too!