I would like to know if you can apply for Destination Thailand Visa while you are in Thailand already?
Also before coming to Thailand i got 90 days tourist visa single entry but immigration stamped 60 days from entry. Anybody had similar case? Now not sure when I should leave the country. Asked issuing embassy and immigration office but no answer...
TLDR : Answer Summary
The general consensus is that you cannot apply for a Destination Thailand Visa (DTV) while already in Thailand. It is confirmed that tourist visas typically allow a stay of 60 days, which can be extended for an additional 30 days through local immigration offices. If your visa shows a 60-day entry stamp, you are expected to leave by that date or earlier. For applying for the DTV, you must leave Thailand and submit your application from abroad.
DTV VISA RESOURCES / SERVICES