D.C. Mun. Regs. r. 23-721
The holder of an on-premises retailer's license shall be permitted to provide bottle service of alcoholic beverages to one (1) or more seated patrons.
A licensee may serve a bucket filled with containers of beer to one (1) or more seated patrons.
The licensee's server shall not deliver an alcoholic beverage to any patron in accordance with this section until the licensee has taken reasonable steps to ensure that no alcoholic beverage is delivered to a patron below the legal drinking age or that otherwise appears intoxicated. The server shall open all closed containers at the table before they are served to the seated patrons.
The licensee shall not permit or allow any patrons to remove the bottle or pitcher from the table, bar or other seating area where served. This provision shall not apply to a single container of beer delivered in a bucket or where patrons have been served alcoholic beverages at the bar prior to receiving table service.
D.C. Mun. Regs. r. 23-721