I always find it weird when big event venues like sports grounds run out of things like crisps and chocolate, that stuff keeps in storage for ages, why are you letting stocks get so low that you don't have enough to cover a single event? If you end up with twice as many as you need on every kiosk what harm is there? If you've got a storeroom full of chocolate 2 weeks before the next game who cares, it's not like it won't sell eventually.
I was at a conference in London before Christmas and they'd run out of teabags, how the fuck does that happen?