Ah, you've been here before, CW!
Seriously: DON'T wear beads here. It will mark you as a tourist, and a dumb one at that (what a friend and I refer to as "tourons"). The locals never wear beads, except what they catch at parades, which happen only about a baker's dozen days of the year (Mardi Gras season, and St. Patrick's).
Capt. Coxetter