Going to Duke for a meeting with director - questions

I will be applying for the 1/05 class. I am meeting with the director 11/10, sitting in on a class and meeting with a student who went to my undergrad school (Emory). In general, I think this meeting has the potential to make my app. more favorable (OR I could blow it by committing some sort of faux pas).
Should I wear a nice suit (I'm a woman)? Should I bring my transcripts? Does ANYONE have any advice or comments? Do I come right out and ask what I can do to make my application more favorable? Thanks in advance, Suzanne