From an interview about the Interlochen Center for the Arts
The Ticker News, April 10, 2015
http://www.traverseticker.com/story/...-came-together
Ticker: And you're also limited by a budget?
Gruits: Sure, everybody has a budget, but what's more interesting is our seating capacity. At 4,000 seats, we don't have a giant lawn like DTE Energy Music Theatre or Ravinia outside of Chicago. We're considered a small venue, and that also limits the types of artists you can access.
Fleetwood Mac, for instance, only goes to venues with 15,000 seats and up.