What are the current requirements and tips for obtaining a COVID extension for a tourist visa in Thailand?

The post describes the experience of obtaining a COVID extension for a tourist visa in Thailand, highlighting the necessity of presenting a return flight ticket and the process involved at the immigration office. It also notes the requirement for recent ATK and vaccine proof upon entry, although this can be bypassed by filling out a form. Other comments provide additional details on which type of return ticket is acceptable, whether medical insurance is required for the extension, and specific procedural requirements like the necessity for a TM30 registration. Overall, the conversation offers valuable insights into managing visa extensions during the COVID-19 pandemic.