The line-up for this show is usually pretty good, but this is the best line-up in a long time. Santa Clara hasn't been in Chicago for a while, Rockford fans only had to drive 75 miles, and beside Cavaliers there were two other potential top 12 corps plus Mandarin, Troopers, and Royal Airs. And all for $15 or $20! Sure there is always a good crowd, but whenever I have attended there has always been decent seats outside the center sections.
The field is great for marching (natural grass). There is a wide track for trooping the stands. And there are good spots for souvenier trucks. The only downside is the close proximity to O'Hare Airport (jet noise).
Many people don't stay in their seats because this turns out to be a "man, I haven't seen you in years" reunion thing. Chicagoland used to be a huge place for drum corps. I miss being able to go to a show nearly every weekend in the summer and never have to drive more than an hour.