I was in a rush to purchase before the ex CAI prices being revised and did not spend the time analyzing or understanding all the rules back in March! As a result I may just have ended with a ticket that did not meet all the rules. Its important to understand that the airlines should have processes to ensure that all the rules, stopover limitations, mileage restrictions are met before they take our money and issue the tickets. With OW some have them and some don't, and with some it's almost impossible to communicate (looking at you QF!). My experience dealing with BA to change dates has been challenging, but eventually everything ends up being resolved before travel. Their fares department are familiar with the rules as the should be and in the end they figure everything out correctly! I wanted to buy a second ticket with them and their "sales lead" in India whose like a supervisor of phone agents, was giving all kinds of different nonsense (such as you cannot book an AT flight, you need to end up in same airport rather Middle East, etc). Dealing with American was much easier due to their in-house special team but I crafted a ticket that was just under 34k miles and now for the remainder I have no mileage left, even to end up in AMM rather than CAI! So I might need to get rid of the leg to Brazil in order to allow more freedom in Europe. I would love to take the QR JFK-DOH flight on the way back. Does anyone know about QR fuel surcharges in comparison to AY/BA?