Hello,
Do you know if it's possible to do a 30 days extension visa without going to the immigration by yourself ?
A friend of mine would like to ask to a visa company to do it for him , but we don't know if it's doable or not ?
At the moment he is on a 30 days exemption , and would like 10 more days.
TLDR : Answer Summary
In Thailand, it is required for the applicant to appear in person at immigration to extend their 30-day visa exemption. Therefore, it is not possible for a visa company or another person to perform this extension on behalf of the applicant.