It has always been at Comic Cons and Celebrations that photography and videography is permitted. Here's their verbage.

http://www.starwarscelebration.com/en/Overview/FAQ

Can I Take Pictures?
For the most part, you're welcome to take still pictures and video at Star Wars Celebration; however, please note that all photography and recording is prohibited during screenings, stage productions, and panels. Also, please understand that guests may or may not pose for photographs with fans. Guests have a right to their privacy, and if they ask not to have their picture taken, please respect their wishes.

Will I Be On Camera?
Star Wars Celebration attracts local, national, and international press. By attending Star Wars Celebration, you give your consent to be photographed and appear on camera. Who knows, you may even be the guest on a HoloNet show broadcast to Coruscant!