Last night (Wednesday 9/13) was insanely busy for this early in the season. Duff bartender brought it up as well. Not sure if TM guest passes opened up or what, but packed.
Express remains great at the soundstages, but horrible at Chucky and (particularly) Oddfellow. Not just my experience, confirmed by a couple friends on Twitter as well. Two weeks in, I'm not sure it's going to get better. At least exit lines from tents seem to have improved--still slow, but no stopping.
Not sure if this has been mentioned, but Diagon is back to fully operational during the event, and is packed.