If your within 12 hrs, you REALLY need to visit Little Sahara. I am going to post this to the forums. I only found this website today. Little Sahara is a must! The daily rate is now $ 10.00 for drivers, zero for riders.
Great place to ride sand dunes. It is actually 10 dollars a day to ride. 20 dollars a night to camp with electric. On main camp. Little Sahara sand sports is a great shop with friendly people and reasonable prices.