What is the process for getting an Australian Marriage Certificate Apostilled and certified by the Thai Embassy for a Non-O Visa application?

The process of obtaining a Non-O Visa in Thailand based on marriage requires specific documentation, including an Australian Passport and Marriage Certificate. It is advised to have both documents Apostilled and certified by the Thai Embassy in Sydney, and to get a Thai translation of the Marriage Certificate. Experiences shared by community members indicate that similar processes were followed in other countries like England and the USA, with variations in the authentication requirements depending on the country's treaty agreements.