Maria Fredriksson historically divers on Samui, Phangan and Tao were using the Non-Imm B MULTI visa from the Penang/Kota Bharu Consulates in neighbouring Malaysia (as they weren’t meeting the criteria for an extension to stay). These Visa are only available for director/company owners now and getting a new Non Imm B single every 90 days just isn’t practical.
Yes, your name on the birth certificate isn’t enough if your child was born outside of marriage. As the child is over seven years old you can (as Robert said) go to the Amphur and register yourself/get the necessary paperwork. I would go to your local immigration office first though, make your intentions clear and ask them for an exact list of documents that they would want to see in order for you to apply.
that’s brilliant. The advice here has been reaching the Siam Tech forum, I put Robert’s TM30 post up there and have been advising people to join this group if they have a visa related question, thanks again Tod 🙏