A couple of other things that I'll add as general info...
I enjoyed camping along the Salton Sea. It was about 20 minutes from the venue, quite peaceful and the charge was around $10 per night.
On the Monday following I went through Joshua Tree before I had to catch my flight out of LAX. JT was about 20 minutes from Indio and the trip from/to LAX was 2 - 2.5 hours.
You could also fly into Palm Springs, Long Beach, or Ontario.
The grass is so lush that you can walk around barefoot all day.