Originally Posted by og
Edited to say: even checking in at SYD International last week on an e-ticket, I was told in no uncertain terms by the check-in lady not just to rely on my QF FF card for check-ins - but to always carry a printed itinerary with the ticket number when on an international e-ticket. I bet she knew the system was good but not perfect.
The first time I used an e-ticket for international travel (a DCIR22), I did not have a print out of the itinerary with me when I checked in for the initial flight. The check-in agent suggested I should carry it and informed me that the airport ticket counter could print one out for me. The agent at the ticket counter was very happy to do that. Even though I did not need to use it along the trip, it was probably good advice and I will always carry a printed copy now.