The organizers need to go to the Polish fest held every March in Phoenix off Greenway & I-17. They have tons of tents for shade with over 100 picnic benches beneath. Large color pictures of the food so you know what you're standing in line for. If a small church can do this with free admission & parking, I'm pretty sure the casino at Talking Stick has enough money to match them! Considering they continually put on festivals (taco, food truck, bbq) investing in large tents and picnic benches would be money well spent.
I spent over $100 in 2 days at the Polish fest in March and loved every minute of it. The bbq fest I tried to spend $$$, but the lines were so long and the vendors were out of food by noon (2 hours after opening???) that I ended up leaving and gave tickets to the poor souls in line outside.
Come on Talking Stick, get it together. You've been doing these events nearly monthly for a few years now, surely you can start improving. Maybe?