Right now it appears that the only consulate in the area that will issue year long, multi-entry Non-O visas based on marriage to a thai is the one in Savannakhet Lao
You need to have 400K baht in a thai bank account in your name only for 2 months when you apply for the visa. It's 5000baht.
It's only issued based on marriage to a thai NOT for raising thai children.
That's the only consulate I'm totally sure of. There are reports that people were able to get it in Vientiane (but it's just a few sporadic reports, not enough that I'd send you there to try for it)
The consulate is a "walk up" consulate meaning you don't need an appt to get in, you apply one morning, and get the passport back with the visa in it the next business day afternoon.
These are the requirements (the only difference is for the year/multi you show the bank book updated and proof of funds for 2 months)
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