Honestly, just between you and me, I could care less. I'd rather sit at home and watch the birds in my yard. Especially since there are so many videos of the Austin bats on YouTube.
It is rather spectacular. I had no idea there were so many! This video is over 9 minutes long. Unless you just want to sit and watch the whole thing for lack of anything better to do on a Saturday night (you could pretend you are overlooking Lady Bird Lake), then skip forward about 2:30 into the clip.