As to ticketing deadlines on a xONEx ex-NRT, my curent experience is that they are very flexible. After setting things up with AA-RTW desk, I made the ticketing arrangements by phoning AA-Japan in February. I gave them my credit card information and was due to pick up the ticket in early April at NRT airport and begin the itinerary a few days later. From February on, my reservation was shown as "ticketed" on AA.com. In late March I decided I needed to delay the start until late June and phoned with that information. It still reads as "ticketed" with the new itinerary but no charge has yet been made against my credit card. I assume that the charge will not be made until just before I am due to pick up the ticket but no one has stated that directly.