First Mardi Gras Bal? Here are the Rules and Etiquette You NeedFirst Mardi Gras Bal? Here are the Rules and Etiquette You NeedIf you're going to your first Mardi Gras bal ever, whether it's in New Orleans or Shreveport-Bossier, LA, this is what you can expect and the rules and etiquette you should follow. BristolBristol