I am not from around that area....just camped there because we were attending a rally. My best advice would be to get in touch with them and they'd be able to answer all your questions.
Was there this morning,. Sites open. Just call them. They are closed Dec 31 and Jan 1. But open on January 2nd. Winter office hours are 8-1230 seven days a week
They do have year round sites but I'm not sure of the availability of them you will need to contact them directly to find out.
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