Maryland Code, Alcoholic Beverages and Cannabis § 20-602

(2)(i) This paragraph does not apply to a license holder that held the license on December 31, 1993, or to a person who has a permit for a building that was under construction on that date.

(ii) Except for recreational use premises such as bowling alleys and pool halls, the area normally used as a restaurant for the preparation and consumption of food and beverages on the licensed premises may not occupy less than 80% of the total area of the licensed premises.