I want to go for September 5 and 6 but I won't camp there, I'm going to rent a hotel, do I still have to pay for car parking? at what time can you be there in the morning and where you have to pay

About the time, im not sure. But early is best because space is limited. Also they charge a day pass of 10 dollars per car that is with your group.

You can have a day passes are avail also about 2 miles up theres a couple of hot springs for this make sure to be there early because is limited space

I'm not sure about that. We've only camped there. And check in time is 12 noon.