I just got back from seeing Star Wars Episode I - The Phantom Menace 3D on opening day. The environment was great in the theater - the show I had tickets for was apparently even oversold - I was suppose to be in auditorium 12 but was directed by management to auditorium 11! Everyone received exclusive Ep. 1 "Darth Maul" 3D glasses which is a nice touch. Some of the kids there had lightsabers. Everyone had such a positive reaction to those kids!
Here are the pictures from the show: