Rates $35 per night from Memorial Day weekend through Thanksgiving week $32 per night during off season Non-refundable reservation fee of $9.50 applies Rates include one vehicle and one towed vehicle per site. Each additional vehicle is $7 per night. Up to eight people are allowed per site. Check-in is 2 PM. Check-out is 12 PM. Most campgrounds allow dogs for a fee of $2 per dog, per night. --from website listed on Google Maps
I don't know how much does it cost to stay, but if you just want to go for the day, it's a $7 fee per car
Go to website
Go to the Sonoma county regional parks website and reserve your spot there.
Yes, you have to pay and reserve a spot. Call parks and rec.
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