20 ILCS 210/7
During the period when each State Fairgrounds is not used for the annual State Fair, the Department shall make all efforts to promote its use by the public for purposes that the facilities can accommodate. The Department may charge and collect for the use of each State Fairgrounds and its facilities. The Department may negotiate and enter into contracts for activities and use of facilities. The criteria for such contracts shall be established by rule.
The Department may establish locally held funds to receive and disburse security deposits for the rental of facilities at each State fairground during non-fair time periods.
The Department also shall have the authority to arrange, organize, and hold events on each State Fairgrounds and in any facilities on each State Fairgrounds for any purpose that the facilities and State Fairgrounds can accommodate. The Department may charge and collect fees associated with the events.
20 ILCS 210/7