The parking is included in the price. 7$ per person. Any number of people can be in the car.
Make a reservation ahead of time online. It's very popular and if you don't make a reservation there's a good chance you'll get turned away at the gate.
The ranger station at the park entrance has them, seek them out.
Just pick it up on your way in. I think there's a sign but you can't miss the cabin on the way to parking. If it's a busy day they will greet you so you don't have to get out of your vehicle.
You buy your entrance pass at the Park Entrance.....on busy days ie.weekends check to see if the Park is full
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