As used in this Act:
"Entertainment" includes, but is not limited to, shows, amusements, theaters, circuses, sporting events, or any other place of public or private entertainment or amusement, unless ancillary to the purpose of the program or event.
"Local public agency" means a school district, community college district, or unit of local government other than a home rule unit.
"Travel" means any expenditure directly incident to official travel by employees and officers of a local public agency or by wards or charges of a local public agency involving reimbursement to travelers or direct payment to private agencies providing transportation or related services.
50 ILCS 150/5