The best advice that I can give is:
FORGET ABOUT IT!!!!
Referencing the published rental rates at the Springfield Park District web site (
www.springfieldparks.org ), renting our old site at the Washington Park Pavilion would cost us about $750 for a 12 hour event, renting the Lincoln Park Pavilion would cost us about $1200 for a 12 hour event, and renting just one section of the Main Hall of Erin's Pavilion at Southwind Park for a 12 hour event would cost us $650. [Having a skittles space would double the rental fee!]