I sent an e-mail to town chief of police about getting permission to MD town park and this was his reply.
Tell me whats your take on this.

City Ordinance
(f) Defacing Park Property. No person shall cut, break, injure, deface, or disturb any tree, shrub, plant, rock, building, cage, pen, monument, fence, bench or other structure, apparatus or property or pluck, pull up, out, take or remove any shrub, bush, plant or flower or mark, or write upon any building, monument, fence, bench or other structure, or injure, deface or remove any property real or personal or any natural growth, structure, equipment, animals, signs or other park property.
Brian