That’s Cindy Morgan (Lora/Yori) and David Warner (Dillinger/Sark/MCP) in the first two photos. One of them looks luminous, and it ain’t the one dressed like a bum. Do you remember the monitors on top of the arcade cabs? No added pressure or anything.
According to the promotional poster below, the finals were held at Madison Square Garden on July 6th and 7th, 1982. Tron premiered on July 9th.
(Images via the Tron Forums, the Examiner, Kolonai, All in for a Quarter, and the Unfiction Forums)
2 Warps to Neptune 
WOW!