Here are a few answers:
First the Arcade is temporary and is a marketing initiative by Disney to promote the new film at Comic Con. The Arcade is not at the convention, however and it is open to the public for free (I'm not attending the con, me and my wife drove down just to see this and hang in the Gaslamp district a bit). Flynn's is open from 9 pm till about 1am and is located at 335 6th Ave., 92101. It is open tonight (Sat.) and I think that's it. Check the site FLYNNLIVES.com for details.
It's not just a walk in and play situation. You stand in line and about every 25 minutes they clear out the place and let in a new group. You can free play all the games and about 15 minutes in they open a hidden door behind the only Tron cabinet that leads to the concept art and Lightcycle display. The tokens are being passed out for free to anyone in the line and you get a free T-shirt as you leave. The poster that is on Ebay was for a scavenger hunt the night before and they have no more. After you are done you can get in line again for another go.
The neon signs and building interior are intentionally weathered so as to look like the old arcade from the first movie that has been out of use for some time, hence all the burnt out neon. The signage all looks fantastic! I particularly like the Space Paranoids poster. I have a really good shot and can see that the original is a vector file; I just might have to recreate that one!
There are maybe 8 or 10 Space Paranoids machines all fully realized! I posted one pic of the level end where you are given another code for the viral marketing (what's it for, don't know????) and you also get a short speech from Kevin Flynn. The game then moves on to the next level and I don't know how many there are. The game has a TRON-ish stick that drives your tank (you can't see the tank as the game is in first person) and a trackball that controls the rotation and elevation of the turret. It seams really hard until you realize that you need to keep the turret facing for ward while you drive so you can see where you are going. The art package on the machines really looks great, and they feel like they could have come off an assembly line. One great touch is that all the high scores on each machine are registered to FLN. I sure wouldn't mind having one of these just for the extreme novelty!
All the games are clean but not in great shape. It's a mixed bag for sure. Some looks pretty nice and others have been "cleaned up" with a coat of black paint on the sides. Except for Asteroids all the vectors were down. Actually, Tempest was working but it looked to have one of those vector/vga converters and was running on a raster monitor (just looked weird!). The only raster games that were down were Defender and Joust.