204 CMR 19.00:
(1) The hours during which sales of alcoholic beverages may be made by any licensee shall be fixed by the Commission either generally or specially for each licensee. Unless otherwise authorized in writing by the Commission, alcoholic beverages shall only be sold or delivered between 8:00 a.m. and 12:30 a.m. on Mondays through Saturdays and between 11:00 a.m. and 12:30 a.m. on Sundays.
(2) Unless otherwise authorized in writing by the Commission, no alcoholic beverages shall be sold or delivered to passengers at dockside or prior to casting off, except that the licensee may, once per day, post a scheduled sailing time for the subject vessel, in which instance, unless otherwise prohibited, the licensee may serve alcoholic beverages from 15 minutes prior to 15 minutes after the posted scheduled sailing time.
(3) On trips of more than two hours, alcoholic beverages shall not be sold or delivered to passengers within one-half hour before the ship docks.
(4) The Commission may extend either the hour when sales may commence at dockside or the hour when sales must cease, or both, upon a showing by any applicant that such extended hours of sale should by authorized by the Commission with a view only to serve the public need and in such a manner as to protect the common good.