Hello, I need some serious advise regarding my NON B visa and WP cancellation. Both of them expires on 30th April, 2020 and I leave Thailland on the same day. So my question is that do I have to cancel both of them from labor office and immigration on 29th? I have never cancelled my NON B and WP before as I have always renewed. So please guide me what is the right way to do it. Thank you