Looking at using my AA mileage to book USAirways flights from ORD to FCO. SInce I am booking 7 months out, will I be able to change the USAirways flights without penalty (like AA allows on AA bookings if you keep the same origin and destination but different days/flights)? I have received 2 different answers from AA agents. And, is it always safer to book from a major airport like ORD (rather than a smaller regional airport like PIA) in case you need to change your mileage award ticket dates/times? Thanks.