Just got back from my second day at the rally.
Sure it was kind of hot, but honestly not that bad. There were, however, tons of places to soak in AC. Many large air conditioned buildings. Tons of shady spots whether natural or man-made. Both Thursday and today there was a breeze blowing pretty constantly that made it feel a little better. Cool water available in multiple spots.
Not even remotely miserable enough to miss the rally for. This coming from someone who hates hot weather. I'd far rather freeze than fry.
Really, the only people who probably have room to gripe are the tire changes. Those guys had bikes lined up like crazy both days I was there. Big difference between walking around looking at stuff and being able to duck into an A/C building at any time versus actually working outside for days.