I had an appointment with a seller of some parts I needed a few hours north of the show Saturday afternoon and had to leave with a pin I bought from the freeplay area around 2:30 to make that appointment.
I borrowed a pin cart to safely wheel the fully assembled game out to a wide open area in front of the garage doors to safely break it down there. Paid my $25 fee and no issues.
Quoted from ForceFlow:Maybe have a clearly marked staging area marked off with red tape and/or signage for breaking down or setting up pins?
[edit]: then again, this might not work since a lot of folks use a hand truck to move pins. You can't really use a hand truck to move a pin around after it has been set up. So, maybe a few pin carts?