Just take your walking shoes. You'll love it!
The acquarium is a highlight; Albino alligators.
Washington square.
All around Bourbon Street (especially Royal St) for antiques and other collectables.
You could avoid Bourbon Street itself but I bet you do go there. Get a take-out walk-away daiquiri.
Or get a Hurrican at Pat O'Briens.
Aunt Salley's Pralines are the best.
The French Market.
For Blues... A must... Donna's Bar and Grill. 800 N. Rampart St. just across from the Armstong Arch at the corner of St. Ann. I have never experienced anythin quit like it. Free red beans and rice!
Donna's Bar and Grill Web Page
More, much more.