So you're going to Coachella this weekend, next weekend or some hypothetical weekend in the future. (Remember, Coachella is a state of mind so one could potentially go to Coachella any time.) Music festivals, especially when they are as big and trendy as this one, are a tough landscape to navigate etiquette and culture … » 4/11/13 6:50pm 4/11/13 6:50pm