Maryland Alcoholic Beverages Section 11-503
§ 11-503.
  (a)   In Baltimore City an amusement license shall authorize the holder thereof to keep for sale and sell all alcoholic beverages at all hours except between the hours of 2 o'clock a.m. and 6 o'clock a.m. of each day.
  (b)   (1)   Except as provided in paragraph (2) of this subsection, no sales shall be allowed by the holder of a Class D, beer, wine and liquor license (without amusement permit) between the hours of 1 a.m. on Sunday and 6 a.m. the following day.
    (2)   (i)   The Board may issue a supplemental license no more than two times during any calendar year to a holder of a Class D beer, wine and liquor license authorizing the holder to sell alcoholic beverages between the hours of 6 a.m. on Sunday and 1 a.m. the following day.
      (ii)   The fee for the supplemental license is $75 per issuance, which fee is in addition to the annual fee for the underlying Class D beer, wine and liquor license.
      (iii)   A holder of a supplemental license under this paragraph shall notify the Board at least 2 weeks in advance of exercising the privileges under the supplemental license.