processing at Savannakhet or vientiane for "regular" visas (Non-O, Non-B, Non-ED) is really fast IF you uploaded all the documents required when you applied.
they are not asking about getting a year extension, they are asking if they can show proof of funds with a bank account in their country to get the initial 90 day Non-O visa fun either Vientiane or Savannakhet <- which they can do
You are correct,
For them to get the year extension they need to bank the funds here,
but
with the difficulty in opening bank accounts on free stamps nowadays many people get the non O visa from a consulate then come back and open the account, transfer the funds, etc.
And no, you cannot file online, no matter if you had done it before or not, because this is a new non-o visa and will be a new extension meaning the first 90-day report on that extension needs to be done in person.
You don't start 90 day reporting until you have your first year extension, that's when most offices will put a small paper in your passport showing when your first 90-day report is due.
So you don't have any 90-day report that you need to do. And you won't until you get your first year extension, which you probably will end up doing on the new passport anyway. ;)
I think you're not having a grasp of how the process actually works to get the initial 90 day Non-O visa, then to get the year extension
it works like this
1 - You apply for the 90 day Non-O visa (in your case based on marriage)
2 - You pay the 2000baht fee, you get a receipt that says to come back in 14 days
***On that date you go back on that date and get the Non-O visa inked in and they give you a new 90 day stamp
THEN You wait until you have 30 days or less left on that stamp
3 - you go back to the immigration office and apply for a yearly extension for 1900baht (with all new paperwork)
4 - you will get a 30 day under consideration stamp inked into your passport
***On that date you go back to get the year extension inked in (then you decide if you want to get a re-entry permit)
You have done Steps 1 & 2 and you are now waiting to go back to apply for the year extension (Step 3) when you'll get an under consideration stamp for 30 days and go back when that runs out to get the year inked in.
You can make an appt no more than 30 days out <- in fact at 12:00 the appts for the next day a month out come available. SO you might have to set your alarm to make a booking because at least in Bangkok they book up FAST
As you can see there are NO appts available for marriage to a thai extensions for Dec just so you can get an idea
you cannot get an extension based on having a Thai wife thru the VFS E-Extension system it is not an option for that program.
You can apply for a yearly extension at Chaengwattana when you have 45 days or less left on your current stamp (so for you any time after Dec 31st (providing your funds are seasoned the 2 months required)