Maryland Code, Alcoholic Beverages and Cannabis § 12-902

(b)(1) The license authorizes the license holder to sell beer, wine, and liquor at retail at the place described in the license.

(2) The license holder shall deliver the beer, wine, or liquor in a sealed package or container that may not be opened or its contents consumed on the licensed premises.

(c)(1) A Class B-D-7 beer, wine, and liquor license may not be reissued as a Class A-2 license.

(2) A Class A-2 license may not be converted or substituted for any other class of license, including a Class B-D-7 beer, wine, and liquor license.