I have multiple citizenships (EU/Hungary and non-EU/Serbia). Will there be any problem for me if I apply for a visa with a passport that I have not used to enter Thailand yet? (I have already entered Thailand with this EU passport this calendar year.)
TLDR : Answer Summary
The user is inquiring whether they can apply for a Thai visa using a passport they have not previously used to enter Thailand, considering they already entered with an EU passport this year. Responses highlight that while one can choose which passport to use for entry, Thai Immigration has access to all passport histories. It is advisable to have the correct visa before arriving, as immigration decisions lie with the officer on duty. Some users note concerns over extended stays on tourist visas and the potential for scrutiny from immigration officials.