Except as provided in Section 9.12.230, no person shall host a gathering on private property where such person knows or reasonably should know that alcoholic beverages are being served to, possessed by or consumed by a minor. Whenever such person is present during such a gathering where alcoholic beverages are being served to, possessed by or consumed by a minor, it shall be a rebuttable presumption that the person knew or should have known alcoholic beverages are being served to, possessed by or consumed by a minor. (Ord. 2010-040 § 2)