St. Louis Cathedral Christmas Concerts: The Cathedral has concerts scheduled all throughout December, including Jazz by Ellis Marsalis, a Christmas Organ Spectacular concert, and even some Opera and French/Belgian Folk music! Click the link for dates.
Merry Fishmas!: The Audubon Aquarium has fun events all December, like the IMAX show Santa vs. The Snowman. But on Dec. 18-19 they have Merry Fishmas, where you can get a temporary holiday tattoo, make an aquatic craft, have your face painted, or have breakfast with otters for an additional fee from 8-9:30am. Pre-registration is required. Call (504) 378-2665 for more information or visit www.auduboninstitute.org. 10am-5pm.
Reveillon Dinners: A Creole New Orleans tradition, many restaurants will have Reveillon Dinners, including 5Fifty5, Court of Two Sisters, Dickie Brennan's Steakhouse, Galatoire's, Mr. B's Bistro, Tujague's, Antoine's, Broussard's, Muriels At Jackson Square, Rib Room Rotisserieand Cafe Giovanni
Celebration in the Oaks: A New Orleans tradition, walking through City Park to see the lights, like the reindeer gator above, is great family fun! Listen to live music, bring the kids on the rides in Storyland, or take the train and be amazed by the gorgeous lights!
And MANY more: Check out http://frenchquarter.com/events/decemberevents.php for a full list of events!