City parks and recreational facilities shall be available for any group or assembly on a first come, first serve basis. Groups or assemblies calculated to attract a large number of people, relative to the size and capacity of the park or facility must, prior to the event, reserve the space. A large group or assembly is that which would occupy one-tenth or more of the user capacity of the park or facility. (Ord. 889-82 § 2, 1982.)