In the end, we got home exactly as planned: a flight from Krabi to Bangkok, a couple of hours at the airport there, and an onward flight to Heathrow, bags checked all the way there.
So was it worth all the unease, a couple of 20 minute conversations with Eva Air in Taiwan and the contingency plans B, C, D and E that we came up with but never put into play?
Well, we were extremely lucky: there was a huge queue at Bangkok of people hoping to get onto flights home, who we really felt for. We were fortunate that everything was back in operation that day: ours was the first morning flight out from Krabi to Bangkok and if we would have been travelling the day before, we'd have been on the overnight bus. And it was fantastic that the Suvarnabhumi Airport authorities managed to get things back to normal operation so quickly after they gained control of the airport, especially as there had been fears that this could take weeks.
So for us, it all ended well, and we were so glad we managed the complete stay at the last hotel as planned, as it was by far the best of an excellent holiday/ honeymoon...