I saw the public world premiere of Captain EO, just by accident. There was a private premiere, for celebrities and such, and a whole section of Tomorrowland had been closed off, including Space Mountain. They told me that it would reopening soon, so I waited at the ropes. When they finally let us in to Tommorrowland, I instead followed the crowd to the Captain EO show. TV Cameras were still set up, so they could film crowd reaction to the 3d effects. With the house lights on, they had us move to the right, move to the left, and act like something was right in front our face, like we were reacting to a 3d movie, and then we got to watch the actual show. About a week or two later there was a one hour special on network TV about the opening of Captain EO, hosted by Patrick Duffy and some woman I can't remember. Most of the hour was interviews with the stars at the premiere, but they did show about 2 seconds of the crowd reaction that I was in. I think I still have it on videotape somewhere.

It's the Mac's 24th birthday, not Apple's. Apple has been around a bit longer (since 1977, I think).