Ah, I think that is one of the documents needed for a marriage visa. I think you first need to register the marriage at the Amper office here (i.e. get the wedding certificates) to get that because the marriage must be recorded in the system for it to be issued.
what are bounces? I think you can get the retirement visa, as long as you are 50, have the money in a Thai bank, and health insurance. I get the idea that it's a lot easier than a marriage visa. I'm not sure about how to transfer from tourist visa to retirement, though.
yes and they will also issue your yellow tabien bahn and ID card (though not on the same day).
You can go to a translation company in Bangkok, I used one near the British embassy, and they will get the translation stamped at the MFA for you for an extra charge. You can send the docs for translation and certification by registered delivery if you're not in Bangkok. They may be confused, I think it's the Ministry of Foreign Affairs in Bangkok that does the certifying. Sometimes, they don't know the procedure and just refuse, but you can ask the Thai police in Bangkok. They were really helpful and gave me details of it and that got the district office to do it.
You can get a certified translation along with a certified translation of your passport, and then use it to get a Thai one and also get a yellow house registration book (tabien baan) and pink Thai ID card. I think you need to do it at the district office where your Thai partner is registered.