Except this maybe, if the drug is illegal. "Behaves in a way that is unlawful/violent/indecent/unsafe, or intentionally damages venue facilities or personal property within the venue."
Yeah if I were a delegate and there was a guy who legally smoked weed and then was at the competition surrounded by kids I would tell him to skiddaddle.
uhh, skidadaddle...?
but . . . that's what you just drscribed Mr. Hypo Thetical as doing . . .
prior to the delgate's using standard-issue strong-arm jack-booted (an)tactics