Any program knows that you are likely going to be interested in other programs.
Just ask them about their program and what they offer. Ask about scope of tx offered, time in OR, time on call, number of residents to faculty, is there an ortho dept and how much collaboration you have with them, if there is any pre-doc teaching involved, anything random about the school/city if you are not from there. these are just random questions off the top that I would probably ask.
As long as you don't act super weird in this meeting I don't think anything can really go wrong in something like this.