What documents are required for a Non-O visa extension based on marriage in Thailand?

you need to slog on out to Chaengwattana and get the hand out listing the requirements to get a year extension based on marriage to a thai.

That's just how it is, most people go out there and get the hand out

As far as opening a bank account that's outside the scope of this group so post on a group related to where you live in thailand and ask about that

this is a list of what most likely is required to get the year extension