There would be drugged people on the dance floor, but I think I mistook your post as having your character approach someone next to the bar itself.<br/><br/><em>Look over by the east bar.</em><br/><br/>Was what caused me to think that.  So the guy with the stained shirt (in how I am seeing events in my head) is standing by the bar but not dancing.  If you'd prefer he is dancing that's fine, it isn't a major change.