Last week I was returning from the Cambria area and decided to drive along Pismo Beach. I've never done that before and it's a popular destination for off-roaders of all kinds. Technically, I think it's called Oceano Dunes SVRA, which seems to have another web site here.
It was very windy and sand was blowing everywhere. Most of the tents were leaning heavily in the wind. I wasn't planning to camp, so the wind didn't bother me much.
There were plenty of vendors renting ATVs and selling food, ice, ice cream, and more.