From 2 a.m. to 6 a.m. on any day, an individual may not consume alcoholic beverages in: an establishment open to the public; a place of public entertainment; or a place at which setups or other component parts of mixed alcoholic beverages are sold under a license issued under the Business Regulation Article. An owner or a manager of an establishment or a place specified in subsection (a) of this section may not knowingly allow consumption of alcoholic beverages between the hours specified in subsection (a) of this section. A person who violates this section is guilty of a misdemeanor and on conviction is subject to a fine not exceeding $50.