>Can I extend a TR 60 day visa at the Ratchaburi office?
If that's where your TM30 is filed, yes, you can extend it at the Ratchaburi office.
>Do I need an appointment?
I don't think so. I can't find any appointment system at
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(I believe that's their website)
>Can I apply just for covid extension or have to get 30 day extension 1st?
You're out of nothing applying for a 60 day extension of stay based on unable to travel due to COVID-19. The worse that would happen is they would give you a 30 day extension of stay based on tourism instead.
REMEMBER at most immigration offices, there is an under consideration stamp.
Different immigration offices have different requirements, and I don't know what Ratchaburi's specific requirements are, but all immigration offices require the following:
1. Your passport and:
a. a copy of your data ("picture") page
b. a copy of your most recent visa (if you have one)
c. a copy of your most recent stamp
d. a copy of your departure card
2. A TM30, filed in the immigration office.
3. The forms (each immigration office may have different forms, and want to use their special forms)
4. A letter from your embassy saying you can not return, OR a print out from your embassy website saying they don’t issue the letters, OR a print out of a letter from the embassy saying they don't issue those letters.
5. 2x passport pictures
6. 1,900 THB.
Different immigration offices have different policies. *SOME* may require:
- The ID card of the property owner where you are staying
- Copies of *ALL* stamped pages in your passport