@Luit ****************
According to the website of the Royal Thai Embassy in The Hague, YES it needs to be legalised by MinBuZa and the embassy. We received the VOG 1 week after requesting it and we’re going to the Thai embassy tomorrow. Actually I also think it doesn’t make sense that the VOG needs to be legalised by the embassy before submitting it online for visa application.
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Fortunately we only need to go to the embassy to submit the VOG for legalisation and they can send it back by post. 😅
(5) If you wish to have your legalized documents sent back by mail, please purchase a PostNL registered-mail barcode and bring it with your envelope to your appointment.
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**It doesn’t need to be translated to English because there’s some English translation on the document at the bottom. I’ve rechecked this with the embassy.