Hi. I recently booked my first OneWorld Partner Award (AA Miles for CX Flights) for me and the Missus, this coming October – going from LAX to HKG (10/9) in First, returning from HKG to LAX (10/20) in Business. But now we’d like to meet up with my Brother for a few days in Vietnam (Hanoi / Halong Bay), so I’m wondering if there’s a way to adjust or re-book my tickets (but keeping my original in/out travel dates) to cover a stopover in Hong Kong (for 4 or 5 nights) on the way to Hanoi, then stopping overnight in Hong Kong for one more night on the way home? While coach tickets on Vietnam Airlines are currently going for around mid-$300 each r/t in this window, I’d prefer to do this leg on CX or Dragon Air if I could (and those coach tickets are currently running almost $800 each r/t - ). If any of you would be willing to share your thoughts/experiences on whether this sort of thing might be possible (and if so, how I might best go about getting this ticketed), I’d very much appreciate it – thanks!