Taking the high road….your accent. There are 67 countries English is the native language. But only U.K., Ireland, Canada, USA, Australia, New Zealand need apply.
Looks easier than Issan as there you need numerous photographs of the family in front and outside of the houses. A map with directions from immigration to your house and 2 witnesses. This was the case in Khon Kaen. Regardless, marriage extensions are more difficult than retirement extensions by far.
it takes 2 days to get your Visa. You submit your paperwork and pick it up the next day. I did it at Vientiane and Suvanaket. That was 10 years ago. I have heard you need to make an appointment now. You can’t just show up. I’m by no means an expert so confer with more people