i think the problem with Coachella is that it only gets to like 90 at night some years.
But I loathe camping and i am not alone. If you can bear similar conditions at Bonnaroo, i would say you could do Coachella.
At Coachella though, you're only allowed some tiny little place for a tent, no RV or camper or huge 20 man tent/tarp thing. It seemed that at Bonnaroo people were allowed way more room to camp.