Do I have to choose one? MARDI GRAS (obviously) but also Crawfest, Po Boy Fest, King Cake Fest, French Quarter Fest, Strawberry Fest, and more.
I chose Tulane because of it's balance between superior academics and an amazing extracurricular life.
I took a game theory course with professor Mark Johnson which was absolutely amazing. I also took a business analytics course (Excel modeling) with Srinivas Krishnamoorthy which also shaped the way I was able to handle my summer internship.
My favorite New Orleans spots are the Fly, lower Oak Street, Cochon Butcherie, Jackson Square, Tulane's campus, etc etc etc,