It says on the on-site camping page on adding car camping " If you already purchased a pass, contact Front Gate via phone to add one to your existing order while supplies last. 888-512-SHOW".
I tried calling the number but all I get is the message about festival passes being sold out and car camping passes are still available but afterwards... it's just static. I waited 20 minutes but no one answered. Are there certain call hours? Or am I supposed to call a different number? Is this there another way to add car camping to my festival pass?