Can I Skip Legalisation by MFA for My UK Marriage Certificate for Thai Visa?

am a Brit, married to a Thai (we married in UK) & I wish to join her in Thailand by obtaining Non-O Marriage Visa conversion from a SETV. I will probably preface this with SETV s + a 60 day “Visiting Family” Extensions – giving me a stay of 120 days each time - until such time as we have all the other requirements (particularly the financial requirement) in place for the in-country 90 Day Single Entry Non-O based on marriage to a Thai, and then the 1 year Extension of Stay.

We visited the Immigration Office in Suphanburi to get the list of requirements etc. They were very helpful, and yes, they do this conversion in Suphanburi.

The first step is the get our UK Marriage cert legalised. As I live in London I can do this via the FCO Legalisation service by post and then take that and the translation (which we have already – done in Bangkok) to the Royal Thai Embassy in London for them to legalise/certify the Translation. Immigration Suphanburi confirmed that this acceptable and they do not need the additional legalisation/certification of the MFA in Bangkok.

They also confirmed that on their list of requirement was the Kor Ror 22 – Registration of an overseas marriage with the local Amphur. I assume that the Amphur will require the same legalisation/certification of our marriage certificate as indicated above. This appears to be a “Belt & Braces” situation as far as supporting documentation is concerned. We will check the requirements at the local Amphur. The IO had printed out a list of requirements (in Thai only) for the 1 year Extension of Stay & under Item 6 Kor Ror 22 it appears to say that each time a new extension is applied for a new Kor Ror 22 is required. This seems odd as once the overseas marriage is registered locally it remains registered.

One of my questions for the requirements for the in-country 90 Day Single Entry Non-O based on marriage was to confirm that it should be applied for within the last 15 days of whatever permitted to stay date I currently have, and the THB 400,000 required (deposited in a bank account in my name) does not need to be seasoned (as it does for the 1 year Extn) and that they do NOT require proof of origin of the funds to be from overseas – income locally derived is OK. IO so confirmed but this last item is contrary to what I have read on this site and so I specifically asked again in Thai (via my wife) & in English (the lady IO spoke some English) and she confirmed that the 400,000 can be locally derived.

The IO also stated that if we were going for the monthly income to fulfil the financial requirements then the amount was THB65,000 per month whereas the figure I have seen on all the documents online is 40,000 per month, & 40,000 pm is on the handout (in Thai) that she printed off for me. This is not the route we will take but I add it out of interest.

So, Three Questions:

1 Legalisation of Marriage Cert: Can we indeed do without the further certification of the translation by the MFA in BKK, having got it from the RTE in London? Or is this a dispensation from Suphanburi?

2 Is the Kor Ror 22 required in addition the legalised/certified UK Marriage Cert + translation? Or is this a specific requirement for Suphanburi & if they want it we just have to get it? And do we need a new Kor Ror 22 each time I apply for an Extension of Stay or is this just an updated one with a new date stamp? Reading elsewhere on this forum indicates that yes, you need to update/get a new KR22 each time you apply for a yearly Extn as this proves that you are still married & at THB20 a go that is the quickest/cheapest option.

3 Can the THB400,000 deposited for the Non-O based on marriage be locally derived? Or again is this specific to Suphanburi and if so can they do this?