What documents do we need to invite parents for graduation ceremony. I have the invitation letter from school, transcript, copies of passport, invitation letter (from me) and an affidavit of support. Does one need to buy the tickets before the interview or an itenary will do? Also, I've heard that it's best to apply one after the other. How true is that? Does anyone have any experience with the procedure. Any suggestions would be very appreciated. Thanks, -LoGiN