Yes you can.
There is actually better parking for camping up top. It's about a 30 min drive up a gravel road though. Look for Crabtree Meadows parking lot!
Yes u can
Yes, overnight fee i believe
Yes
Yes you can be careful have fun
Not that I know of. You do have to pay to park, (On the honor system)
Yes, but you pay by the night. I've parked there for two nights while camping up top.
Thanks! Your answer is awaiting moderation.