No person in any park, including any park street and all public sidewalks of such abutting streets, shall sell, offer for sale, hire, lease or let anything whatsoever, tangible, intangible or any service or engage in any other commercial activity, including commercial, still, video, cinema or audio reproduction of events or activities occurring in the parks except under and within the terms of a permit, or except as otherwise provided by law.
N.Y. Comp. Codes R. & Regs. Tit. 21 § 9003.32