Mark only telling how it is in my country...yes population registry can mean birth certificate in a lot of countries... sorry just a slight error on my part...I'm sure the op will get what he needs to achieve his I'd and yellow book status he was 90% there :-)
Most of the Amphoes seem to ask for different things to comply...mine asked for my full birth certificate translated into Thai.. I got the translation done by a local lawyer and he was allowed to authorise it.. so no need for it to go to MFA....but as I say a lot of differences between amphoes
Haha.😃 I don't think 9000baht is rolling in money..everyone who has ever done this will have a different method I'm only saying of my experience as I was lazy and didn't want a lot of running around I enjoyed Bangkok while someone did everything for me :-)
www.legallymarriedin Thailand.com cost me 90 00 baht they did everything for me I only had to get my affirmation from The British Embassy + they collected and paid for the taxis to/from the Amphoe in Bangkok for the ceremony. There is definitely no same day service anymore.