Wow. What a horrible experience. The only thing that saved me was my check in showing up on Facebook, and I had some friends text me they were there too, so between 4 of us, we split up, got in line for 4 trucks and ordered food for each other.
The trucks need to organize and do this on their own in a parking lot on a regular basis. I know in downtown Phoenix they have their Food Truck Court Wednesdays which I've been to a few times but to have to pay for the privilege to eat at a food truck, and wait in line like this, not a good experience.
I was hoping to spend some money, walk around and try different foods. Forget about it!! If it weren't for meeting up with friends, we would have eaten from just one truck and I would have to use the Yelp cliche line "Would give negative stars if I could"