It's free on the weekdays or when it's not busy. They will also close the entrance temporarily if there isn't any room to safely park, but I always just park somewhere on a close road and walk in when that happens.
Just make sure you get there early on a peak day. They fill up fast
On weekends and holidays its a dollar or two per person
No.
Nothing
No charge to enter.
I have not paid
Never had to pay.
I've never seen them charge to park or walk in, and I go on weekends and for special events.
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