That was pretty much it. Next day I went to Chiayi HSR station and from there to Taoyuan and back to Bangkok.
Attachment 102588
The sting in the tail was the last leg from DMK to Udon Thani. I hadn't prebooked because I wasn't sure exactly what time I'd be there. The next flight to Udon Thani was fully booked, I wasn't expecting that. My only option, other than staying the night in town, which seemed like an option to me although the gf was unimpressed with that idea, was to wait a couple of hours for the flight after next. And a cool Baht 3,000 for the ticket. Not long ago you could get two people, return and change out of that.