I tailgated at a saints game a few weeks ago...
Creole Jambalaya, Brats, Chicken Spiedies, and plenty of cold Heineken.
Champions Square had everything one could want, too...all the big name New Orleans restaurants had a showing there, from ACME Oyster company to Gallatoire's. You could get anything from duck and andouille gumbo to charbroiled oysters rockefeller to sushi. I always cook my own though.