That is a good point, regarding the 'return ticket' rule. Last trip we had booked two one way tickets, both on AA. When we checked in, in Miami, I forgot to have the record locator available for our return trip. Honestly, both trips were on AA and I knew the date of our return, and they were booked on miles, so I really think AA should have been able to look it up?? Anyway, I did dig through our stack of stuff and get the return flight info, but it's a good point--have the flight info available for your return trip.