Was my first time and i reckon ill go back next year. BA had started doing direct flights too which is handy. Stayed at an awesome place called India House Hostel, one of the coolest places ive stayed at. The festival is pretty cool but gets done at 7pm and then there are loads of after parties going on. I managed to see Kamasi Washington in a tiny venue at 2am! Other than that avoid bourbon street its a touristy shit show, Frenchman street is where all the awesome Jazz is at!
Hope you manage to make it happen =)