Said Department may establish, manage, and promote athletic and recreational activities in the parks and other appropriate buildings and places; and in the management and promotion thereof, said Department may, subject to the approval of the City Council, charge admission and/or user fees, which fees shall be used by the Department first, in defraying the expenses of such activities, and any excess in the amount of such fee after such expenses are paid shall be used by the Department in the maintenance and improvements of the City Parks and Recreational Program. (Amended 2001, No. M-6, § 2.)