Interesting. Probably a minor detail, but who knows.
In the Speculation thread, nothing is ever a minor detail!
Edit:As for the booth, its rather small.
That says something to me. Bethesda, last time they did their Oblivion demo, they had a very select group of people let in to see it. It was just a small dark room with chairs in it and a projector to watch the demo on.
Seems to me this might be a similar situation.