Can I walk in to Immigration at Chaengwattana for a Non-O visa extension appointment, or do I need to book online?

@Peter ******

which while interesting still doesn't mean that choice I showed wouldn't work 😉 but you could be correct, I guess it's gonna take someone trying it and failing to see if it doesn't 😕

I did remember when they rolled out the online program it did not have a choice for marriage extensions, so you could be right and it still doesn't

@Tod ********

, I always thought that "visiting" was different to living here.

@Peter ******

that's the choice I'd pick, even though I agree staying here long term because you have a thai wife is not the same as visiting,

BUT

when you pick the choice for the Non-O visa in the eVisa system for the thai consulates in the west it says "visiting thai family more than 60 days" for the 90 day Non-O

Perhaps you're correct and there is no choice for it, BUT I'd try that and belive me if it didn't fly they'd tell you in no uncertain terms 🙂