Earlier this month we visited New Orleans and I made it a point to visit The Tobacco Exchange and Mayan Imports, and I picked up a Peterson Pipe of the Year at each (a 2008 and a 2011) for a really good price, and they were both brand new. I wanted to go to the Tinder Box but there wasn't enough time. What's really nice about The Tobacco Exchange is that it is right in the French Quarter, and as a tourist you will probably be going there anyway. Metairie is on the other side of Lake Pontchartrain if I remember correctly; a 30 mile drive over the longest bridge in the world.
If you make the trip over the bridge, you might also want to check out Jewel's Cigar and Briar Shop in Covington (201 N New Hampshire St, Covington, LA 70433), as they have a large inventory of estate pipes, tobacco, and lots of cigars. Very friendly and talkative regulars there that don't mind us Yankees stopping in for a visit.