Verti Mart's brisket po' boy is scrumptious. It's a grocery/deli on a corner near the Croissante d'Or past the Ursulines convent. I go there every trip to the quarter since I saw a carriage driver stop in and come out with a grocery bag with 4 french bread loaves wrapped in butcher paper. The drunk couple making out in the carriage never knew he stopped, and I'm betting he didn't share with them...

ACME Oyster House is the best casual dining spot in the Quarter. I think its on Iberville. Have the roast beef po' boy dressed, or the red beans and rice. And a half dozen oysters.