Maryland Alcoholic Beverages Section 11-519

      In St. Mary's County, notwithstanding any other provision of this article, the hours during which a liquor licensee may sell those alcoholic beverages for which he is licensed shall be from 6 o'clock a.m. to 2 o'clock a.m. the following morning, including Sunday. No consumer may remain on the premises of the establishment after the termination of the hours of sale, except that customers may remain on the premises for one-half hour after the closing time on Sunday morning.