As I have (probably) said elsewhere, I was there, memories are beginning to fade a bit now, 22 then, 61 now. I agree with Mozo that it probably was a bit shambolic but it definitely was magical (rose tinted hindsight?).
No, it really WAS magical. In 1982 it seemed like Peter had been out of the group forever. In fact it was about 7 years! But even in 1982 we knew it was special, and as history shows us, it was pretty much a one off.
As I mentioned already the atmosphere was borderline hysterical! I have no recollection what we expected as a setlist beforehand, but what they played was Fantasy Island stuff.