No Free sites. $20 a night. You have to go to recreation.gov to reserve and pay.
I believe everything is $5 a day. You pay with a credit card at a stand-alone machine. I did not ever see anyone getting in trouble for not paying. They did have a ranger that keeps an eye on everything a let's you know if you are breaking any rules. The ranger was very nice and we didn't see her issuing any tickets (that we saw). She was very firm and did let us know that there would only be this one warning without a ticket (we pulled a person on a tube through a "no wake zone" slowly but it's not allowed at all).
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