Hello, is it possible to get a 45-day extension of a visa exemption, or is it always only 30 days? The immigration office of application could be Krabi, Trang, Phuket or Bangkok.
TLDR : Answer Summary
It is not possible to obtain a 45-day extension for a visa exemption in Thailand; the maximum extension is 30 days only. If you have Thai family, a 60-day Visit Thai Family Extension may be available, but usually requires a prior 30-day extension. For longer stays, obtaining a 60-day tourist visa is recommended as it is more cost-effective and easier to manage.