Do I need a letter from the US embassy for a Covid visa extension in Chiang Mai and is a TM30 required?

The user inquiring about the Covid visa extension in Chiang Mai is told that a letter from the US embassy is no longer needed for the application. They are also advised to check with Thai Immigration for specific requirements, as a TM30 form is generally required if the apartment owner did not file it upon their arrival. This form must be obtained within 24 hours of arriving at the accommodation. Failure to present a TM30 during the visa extension application may lead to a denial of the extension and potential fines. It is vital to ensure all documentation is in order before proceeding with the application.