Either the holder of a caterer's license or a designated manager shall remain on the premises for the duration of the catered event.
The holder of a caterer's license, or the designated manager, shall keep a copy of the caterer's license on his or her person during the catered event and make it available for inspection by an ABRA investigator upon request.
D.C. Mun. Regs. tit. 23, r. 23-2005