We were there in in 10/2001 for the opening week of Monsters Inc. We had a great time! It helped that my son was Sully for the Halloween party and we were able to get our first real look at Sully at the show.
They did request my video camera, however. I had to take it to the managers office, which seemed to be a half mile walk from our theater. Picking it up was interesting for a few seconds. When I went to pick it up they said that they were unaware of anyone leaving a videocam in their care. The gentleman must have seen the angered look coming to my face and quickly added "I'm sure it's in the managers office". It was and there wasn't a problem.