Md. Code, Alcoholic Beverages and Cannabis § 26–2706

(a) An individual may possess an alcoholic beverage in an open container on private property described under § 6–322(a)(1) of this article only if the individual possesses and presents the written consent of the owner of the property.

(b) An individual charged with a misdemeanor under § 6–322 of this article shall comply with the command in the charging document to appear in court by appearing in court in person.