The provisions of sections 3.336 to 3.344 of this code are intended to authorize and regulate private commerce activities on public property. Except as specifically provided to the contrary, the procedures and requirements of sections 3.015 to 3.075 of this code apply to the activities authorized by sections 3.336 to 3.344. In addition to the administrative powers set forth in sections 2.019, 3.015 and 3.340, the city manager is authorized to contract with a private entity to administer all or any part of the private commerce on public property activities authorized under sections 3.336 to 3.344.