If you reserve and pay for a pavilion and someone is already there using the pavilion when you arrive, you can ask that person(s) to leave, because you paid to use it. If you want to use a pavilion but do not reserve or pay for it, and someone is already there when you arrive, you cannot ask that person to leave. The pavilions are not always rented, so anyone from the public is free to use them but it would be on a first come, first serve basis. The most popular rentals occur at Campbell Park, Dewey Boster, Festival Park, and Wes Crile Park.