Based on the demo video that's been posted, and listening to the other demoer in the background, the demo is scripted. Attending it more than once will not be beneficial.
I was kind of laughing to myself while watching it, because the demo guys are going to have to run the same scenario over and over and over...
Yeah... that's why I said, "You can ask for a more in-depth demo."
As in, one of the demoers might feel bad for him because he's a tournament player and they might actually play a real game with him.