Hangovers are hell in that environment. If you got to burning man for the free drinks you're an idiot and won't come back. MDMA is fun to make a night of but not the drug of choice out there.
I generally recommend the playa shandy: lukewarm Tecate with a scoop of gatorade powder mixed into it. Hydrating, requires no refrigeration, and it's got what plants crave: it's got electrolytes.