Bristol was just sad. Not a soul in the corner seats and sparse along the straights. I know it's difficult to hide the fact there, but I'm surprised they didn't mess with the shots some so the empty seats weren't quite so prominent.
Just from the streams Saturday and Sunday, it didn't look like Vegas was that bad. Not a sellout, but it still looked pretty healthy. I didn't see any good views of the stands, though, so I'm not sure how much of it was just camera angles.