The show never actually took place. Smoke and mirrors, photoshopped pictures and advanced CGI techniques were used to project 3d holographic images onto a giant green screen. Add in some "audience sounds" and camera trickery, in retrospect the whole thing appears very believable. They used the same studio in which the Moon landings were hoaxed and the whole fraud was overseen by Stanley Kubrick.
Find me someone who attended the event and I'll show you somebody who walked on the moon :-)