I attended in the Madison, WI location. The theater was about 60%-70% full, which I was happy with. Overall, the sound and video qualify was good. I thought the pit and electronics for Boston were especially loud, but I wasn't overly fond of the show, so I guess I'm a bit biased.
I am so happy that this theater option exists for those of us to can't make some of these bigger events in person. I'm willing to suffer a few sound or graphic issues for a taste of a great start to the season.
Overall, the crowd loved Cavies, Cadets, and Bloo. Everyone, including myself, seemed underwhelmed and disappointed with Crowns show. Honestly, I thought the brass book is flat compared to recent years...