The grounds are closed after hours by a gate
You can do anything if you don't have a car with you.
No. The park rangers will close the park at 9PM and ask you to leave the park.
We were there at 9am and the grounds were open even tho the mansion didn't open until 12pm. I'm not sure about when it closes though.
I believe there is a gate they close, where the parking lot is located. I'm not so sure it's open to the public, after 9pm.
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