There are three rules during Mardi Gras that are strictly enforced and pretty much the only no-nos that will get you arrested immediately: No glass on the street, no peeing in public, and no fighting! (This includes anything that leads to a fight, like spitting on someone.) There are undercover cops everywhere that may let you get away with smoking weed, but absolutely no fisticuffs. Yes, it's Mardi Gras—get wild, but keep it together. You should still tip at bars, shouldn't throw up everywhere, or pass out in a dirty Bourbon Street puddle. Cherish the city. Carnival isn't time to come in and trash it. Have some respect. Give a fuck.