The pylons have a really weird weight distribution and it makes it really easy for them to fall in the floor and push the pedals when no one is in there.
Source: Have had a similar scenario play out in a much smaller, less crowded venue.
Used to do this in college all the time... drink the good shit myself then bring the shit that tastes like paint thinner to the party in the same bottle. Just make sure you pour the first drink so no on realizes it's open already.
And neither are some of the younger ones who they might have counted on in the past... I just hope it's enough.