Ban drinks on the floor and have gatekeepers guarding the exits to the bar. Train them to screen everyone leaving for symptoms of the date-rape drugs. (Are they fast-acting enough that this could be noticeable before they exit?) Announce and post signs so patrons expect this. Maybe train the bartenders too. Also don’t give anyone more drinks if they’re getting drunk. Maybe also screen everyone exiting the venue, if possible.
Ban drinks on the floor and have gatekeepers guarding the exits to the bar. Train them to screen everyone leaving for symptoms of the date-rape drugs. (Are they fast-acting enough that this could be noticeable before they exit?) Announce and post signs so patrons expect this. Maybe train the bartenders too. Also don’t give anyone more drinks if they’re getting drunk. Maybe also screen everyone exiting the venue, if possible.