D.C. Mun. Regs. tit. 23, § 203
203.1 A wine and beer purchasing permit shall allow the holder of a Retailer's license Class A, Class B, or brew pub license to sell wine and/or beer to the public at the premises of a Temporary or a Retailer's Class C or Class D license holder.
203.2 Beer or wine that is purchased at the authorized location from the Class A, Class B, or brew pub licensee under the wine and beer purchasing permit shall not be opened or consumed at the authorized location.
203.3 A District off-premises retailer or brew pub authorized to sell containers of beer or wine at the authorized location may remove closed containers of beer and/or wine from the authorized premises but shall not be permitted to remove opened containers of beer and/or wine from the authorized premises. This subsection also applies to customers who purchase or receive alcoholic beverages at the authorized location.
203.4 A wine and beer purchasing permit shall not be issued for more than four (4) consecutive days.
SOURCE: As amended by: Final Rulemaking published at 45 DCR 8183 (November 20, 1998); Final Rulemaking published at 51 DCR 4309 (April 30, 2004); as amended by Final Rulemaking published at 55 DCR 12991 (December 26, 2008).