Countdown to New Orleans!

I leave tomorrow evening for New Orleans for my half marathon on Sunday.  I'm super-excited!  I've never been, and I'm generally itching for a reason to get out of D.C. for the weekend.  So this trip comes at a really good time (although it also requires me to run 13.1 miles, which I'm increasingly concerned that I'm ill prepared for!). 

My question for you all is: What shouldn't I miss?  Keep in mind that I won't have a car, but I'm staying in the French Quarter.  I won't have a huge amount of time, so a big day trip probably isn't on the agenda this time around.  Any suggestions for me?