Can you make a new extension retirement one year visa in immigration office Bueng Kan for 2 month money 800.000 bath on bank or you need this money 3 month on the bank

Mvg Huib

UK passport. SETV ends 22 Jan.

Can I extend 60 days based on marriage at my local Immigration office (Bueng Kan)?

Anyone had experience of Bueng Kan IO (strict and bureaucratic or relaxed like Udon?)

If so, do I need 400k Baht in Thai bank for this 60 day extension or just the usual 20k Baht for extensions.

What steps and docs are needed?

Form TM7

Photos x 2

Marriage certificate (and copies)

Wife to attend with me???

Wife ID, Tabien Baan (and signed copies)

Proof of funds?? 20k or 400k in Thai bank

TM30 (and copy)

Passport and TM6 (and copies signed)

Flight out confirmation???

No hotel booking as staying with missus parents. Or is it better as a "tourist" to be hotel based and have copies of bookings?

1900B Fee

Thanks in advance.