I was there today. Sure was hot. I was on the silver 2005 that ticks like a tractor wearing a Honda badged straw hat.
I rode around with my 8 year old on the back until the rain hit. Saw some TW's. More than I expected.
It was our first time and He really enjoyed himself. We watched the harescramble, wall of death, and the trials demo.
We will definitely go again. Maybe try camping it next year.