Md. Code, Alcoholic Beverages and Cannabis § 9–2501

(a) (1) An individual may not possess or consume an alcoholic beverage during the hours stated in paragraph (2) of this subsection in an establishment that:

(i) is not licensed by the Board; but

(ii) is:

1. a restaurant, tavern, hotel, club, dance studio, or disco;

2. a place of public entertainment;

3. a place open to the public;

4. a place that is licensed by the State or the county; or

5. a place at which setups or other component parts of mixed alcoholic drinks are sold.

(2) The prohibition under paragraph (1) of this subsection is in effect:

(i) from Monday to Saturday, from 1 a.m. to 7 a.m.; and

(ii) on Sunday, after 1 a.m.

(b) An owner or a manager of an establishment under subsection (a) of this section may not allow consumption or possession of alcoholic beverages that is prohibited under this section.

(c) A person who violates this section is guilty of a misdemeanor and on conviction is subject to a fine not exceeding $500 for each offense.