(a) The portion of the land or facility being used or occupied is designated by the City for public use and the person’s use or occupancy conforms to that public use; or

(b) The person first obtains a lease, permit, concession, or other written permission from the City authorizing the use or occupancy; or

(c) The person is on a premises with the express or implied consent of the lessee, permittee, or concessionaire.