Late to the party here...
As a note @Cia, @wildone and others...On the Weekly Wrap Up page the deadline in the link to the secret indicated July 16th, click on the link, July 15.....
Haven't gone camping in years, decades actually....I used to follow the New England/upstate New York bluegrass circuit with my old '67 Volvo station wagon, with the back seats folded down, there was room for two...nearly in all cases there were porta potties and a river/lake and if not, an outdoor shower station set up.
I remember those days fondly, unlike the poor soul who thought dropping firecrackers down the porta potties vent pipe was a good, and funny idea, our group decided the other side of the festival was a better place to enjoy the concert...