(a) A license with an off–sale privilege may not be issued or used if the license applicant or license holder proposes or restricts the sale of alcoholic beverages to a specific group or limited membership. (b) A license holder who restricts the sale of alcoholic beverages to a specific group or limited membership shall: (1) report the restriction to the Board within 30 days after the restricted sale began; and (2) surrender the license to the Board.
Maryland Legal Code