Pretty straightforward, nothing has changed since pre-covid.
All i needed was:
Copy of Wifes ID
Copy of Wifes tabian baan c
Application form
Copy of entry visa to Laos
Copy of passport data page
Marriage cert original
5000thb fee
* one form he did ask for that's not mentioned on website and i've not been asked for before is the document for wifey to change from Thai to western name, i had a photo on my phone but got the impression he was not too concerned, will take with me next time.
Dropped off in the morning, only about 20 people there, picked up next day afternoon, back in Thailand by 1500.
Stayed at the new place right over the road, 4800 for 2 nights, nice place and very convenient, they've got a camera out from at embassy so you can see when the Q starts to build and pop over - handy. Very comfy beds.
It's much less hassle than extensions and dealing with immigration IMO.
Savanakhet is super boring, even for 48 hours, reminded me of quarantine, glad it's only once per year!