I am now midway on a AONE5 issued from MRU and I have found that they are they are excellent even at booking open dated segments immediately over the phone or by email. In some places like India the RTW awareness is very low with BA and Qantas and this can be a real hassle as they want you to fax the ticket or go to their office or some such thing. Also, the Qantas office in Mumbai even told me that they could not book flights on Qantas as the ticket was on BA paper and only BA could do so !!! I have found Cathay to be the best at making reservations on open dated segments over the phone outside the US.