Roger Waters told that the greatest audience was in the concert of Istanbul. However, this concert was not filmed for this movie, because the decision of which concerts will be filmed is made before gigs occurring.
The first spoken words in this movie is "We came in..?" The last words are "Isn't this where...?" These same lines are spoken right at the start of the original album "The Wall", and at the very end. Looping these lines indicate the symbolism of a circular pattern and that the history repeats itself.
The Wall itself was an arena width monstrosity. In the 2014 recreated film production, it stands 35 feet high and averages around 240 feet wide, depending on the scale of the venue. It was fashioned from around 400 cardboard bricks of five feet by 2.5 feet that arrive flat packed for assembly by the crew.
The Wall Live Tour cost $59 million to develop.
Keyboardist Jon Carin had performed with Pink Floyd (sans Roger Waters) dating back to 1985, the year Waters left the band.