Thanks so much [MENTION=165293]pandaperth[/MENTION] - I had a flight picked out on Expert Flyer with AY but I see in brackets it's Vietnam Air - assumed it might be a codeshare and thus possible to fly it? If not then your idea of an overland sounds interesting anyway - I've always wanted to see Angkor Wat!!! And we're retired and have nothing better to do than travel given most of our children live overseas anyway so time isn't an issue!
And yes - a DONE5 - I'd better take a break from the computer for a few days.....