I like to go there Saturday morning. I park across the road at the Racer edge parking lot, they have shuttle bus that drops you off at the front gate.
I get all the bulk items like oil , belts first, then head to gate and catch the shuttle bus back to the truck to drop off the goods, I know the guy who drives the bus, so he takes me right my truck. Then head back to the event to see what else I don't have or need.