Karen is correct. There is an area for parking before the gate.
If the gate is closed for the cars to enter, you can still walk in on the side of the gate. It's just a walk of about less then 5 minutes. I did it when I went and the gate was closed as well.
8am to dusk. The gate is always down. You can't drive back. You park in front of the gate and walk.
Thanks! Your answer is awaiting moderation.