Do whatever your feel will prepare you for success. No airline prep but had much experience interviewing in general. Most of my prep was in studying two prep books, "Everything Explained..." and "Airline Pilot Technical Interview". Echo - game face on at all times, even with hotel staff and shuttle drivers. Be professional but most importantly be honest. Update your resume at least every two weeks and also include all your other successes outside of flying (at least for Airline Aps). 2 for 2 in 10 months, AAWW & DAL. Currently waiting in pool for DAL. Good luck!