Md. Code, Alcoholic Beverages and Cannabis § 9–1307

(a) The Board may grant a per diem license of any retail class.

(b) A per diem license authorizes the holder to exercise any of the privileges conferred by the class of the license:

(1) at an entertainment event held by a club;

(2) at the place described in the license; and

(3) for a period not exceeding:

(i) 7 consecutive days for a beer or a beer and light wine license; or

(ii) 14 consecutive days for a beer, wine, and liquor license.