You should already be on a marriage Non-O Visa and you will be looking at seasoning your funds for 2 months then applying for a 12 month Extension of Stay, not a Visa. The Kor Ror 22 can be obtained in minutes at your local amphur so I assume your constraint is the seasoned funds unless you were married outside Thailand which means you have not planned this at all well.

@Stuart **********

I've heard it's very difficult to transfer to a new branch and they encourage you to open a new account.

@Tod ********

and Thai sim with new passport number

@Maitin ******

I know

@Jay ******

so your agent required no paperwork from you?

@Ripan **************

Yes, maxing out a Visa Exempt entry to get 90 days then returning soon after for another Visa Exempt entry is a big red flag. Yes a border run agent is always safer.

@Barry *****

In some Immigration Offices there can be two additional STM forms to sign, one is regarding overstay acknowledgement.

Departure date 14-Aug, is that correct?

Where are you?

Your extension will only be issued up to the validity of the passport so, in your case 6 months, then you apply for a new 12 month extension for your new passport, you lose 6 months.