As some of you may know Tuesday, March 4th, is Mardi Gras day in New Orleans. Midnight on the 4th marks the end of the Mardi Gras season in New Orleans which commenced on January 6th (twelfth night). Parties and balls and parades have been going on since then.
Here are two URLS for live cam's in N.O.
One is the parade cam where you can watch some of the parades. The camera is located on St. Charles Ave at the corner of Napoleon Ave where the parades start.
The second one is of Bourbon street at from the Cat's Meow balcony, which is located on the corner of Bourbon Street and St. Peter Street in the center of the French Quarter.
http://www.nola.com/paradecam/
http://www.earthcam.com/usa/louisiana/neworleans/bourbonstreet/
On the right side of the parade cam page is a list of other New Orleans cams, if you are interested.
The parade cam page also has a schedule of the parades that will be shown live.
A large percentage of the crowds that you'll see are tourist. Many of the native Orleanians avoid the crowds and actually leave the city for the gulf coast (Gulf Port, Biloxi, Ms) on Mardi Gras day.
OH! Mardi Gras day is a legal holiday in Louisiana.
Enjoy,
Tomas