To dress or not to dress

After a weather rerouting to refuel, a flight 3 hrs longer than planned, and tight connection into a changed flight, I finally made it to Harrisburg PA, but my suitcase didn't (same suitcase with the baggage tag in the wrong place)

I'm giving a keynote tomorrow to all of the staff in a school district.  Should I go with the only clothes I have or drive 30 minutes to the nearest mall to get some clothes?

Consolation price: at least I made Guest of the Day, for which I received a Hershey's bar.  (I'm 40 miles from Hershey's Chocolate World).  :)