It is unlawful for any person or group of persons to require, impliedly or expressly, any admission charge to any party conducted in any residential zone. For the purposes of this section, "admission charge" means a tangible benefit, monetary or otherwise, required as a condition of admittance to a party. Customary courtesies, donations for political, charitable, community service or religious purposes, and clearly noncommercial activity, such as gifts from guests and voluntary sharing of expenses for meals, shall not be considered "admission charges" under the meaning of this section. A "party" means twelve or more persons meeting together for social, recreational or amusement purposes. Any person, firm, partnership or corporation violating any provisions of this section or failing to comply with any of its requirements shall be deemed guilty of a misdemeanor and upon conviction thereof shall be punished by fine not exceeding one thousand dollars or by imprisonment not exceeding six months, or by both such fine and imprisonment. (Ord. 2831 § 1, 1992).