A friend of mine who was there said there were dogs inside... walked around by policemen. Needless to say my friend and crew were a bit scared, and in fact took their drugs much faster than they would have otherwise done.
They are normally pretty responsible people, but faced with the not-so-nice options of (1) taking everything at once (2) getting caught by the dogs (3) sacrificing their drugs by throwing them away / on the ground, they went for option 1. It's not a nice set of choices!
Luckily they were experienced and got through it without freaking out... or luck was on their side, either way!