I second that! I wore heels, because I found some navy blue ones that matched my suit so perfectly! But the small amount of walking made me regret it. Definitely wear a suit or you'll stand out (and not in a good way).
The day is made up of presentations, a small writing sample, lunch, a tour, the interview (approx. 20-30 mins), photos (so bring a small comb, lint roller, etc), and the white coat fitting. It's a long day, but try not to stress so much; I definitely look back and see I was stressing myself out far more than is necessary. Hopefully you'll have gorgeous weather like we had on the 26th!
Everyone at the school was super friendly. The interviewers know it's normal for you to be anxious, so they try to make you feel comfortable. Just be yourself, be honest about your reasons for wanting to join the pharmacy profession, and make sure you do your research about the school and the Ignatian values. Be prepared to ask them questions, too.
All in all, just be calm, have fun, and good luck!