I don't think you'll have a problem then. FQ will be more crowded, but when I was there for the Super Bowl it was almost wall to wall on the street but there's plenty of bars to pop into so you won't have trouble getting a drink or even finding something to eat. Especially off Bourbon.
Dunno if Rob and Mrs Rob care about good restaurants... if all they want is bar food, well, bar food in NOLA is better than bar food in most places... but good restaurants is one of the special things about NOLA, and they will be packed...
If they do care, then plan ahead (if you can, some restaurants are sick of people abusing their reservation system on busy weekends) and plan to EAT EARLY....