just watched a live report on WPLG with Todd Tongen (I love the internet)....where they showed a few clips of taping, which was going on in the background while he was live...
The backdrops for the set? Bleachers filled with about 200 additional audience members.
(Yes, I realize this is the same minutia that other kids post on this board, but I have to say, it did look cool. AND, I wonder if Harry and the gang are looking at something like this for a future set change in LA.)