Hi initials - at my interview a few weeks ago, most of the applicants were wearing business-appropriate outfits. One girl had jeans on, and another lady had a really short (but nice) skirt and HIGH heels but everyone else was more middle of the road. I wore a cashmere sweater over a silk shell, slacks, heels and some conservative jewelry and that seemed fine. By March 10th NOLA might already be quite warm - we are in the 70s this week, so check the weather.
LSUHSC isn't in the best part of town, but it is fairly close to the quarter, CBD and the Uptown/Tulane areas. Depending on where your hotel is, it might be a better idea to take a cab instead of walking just to be safe. If you have time, check out the shops and restaurants on Magazine St. for some fun places. Read through the reviews on UrbanSpoon.com for different restaurant reviews - they are usually pretty right-on. You can also check out nola.com for local events - there are always festivals going on. Try to get out of the French Quarter - it's fun for a night, but there is SO much more to NOLA!
Also, I found it a little confusing actually getting into the LSUHSC on the weekend - apparently visitors used to be able to park in the Gravier St. garage but can't get in now that they are renovating it. Fortunately, there is a lot of street parking available right next to the garage. You can walk in through the pedestrian gate, cross to the garage elevators, go up to the overhead walkway level (they have a closed overhead walkway system connecting buildings on the campus) and follow the signs to the nursing school. The walkway system is pretty big, so it might take a minute or two to make sure you're going in the right direction. I would give yourself a good 20 minutes to get from the street outside to the interview lobby area (but you should be able to make it in MUCH less time).
The LSU staff and students conducting the interviews all went out of their way to reassure us - made a big point of telling us all just to relax, not stress. My interview team really just wanted to get to know me, make sure I understood what the CARE program would be like and get more information about what I wanted out of nursing - it was not like a job interview, more like a good round-table discussion.
Best of luck to you!