My wife, a Thai national, no visa needed, did one of those cooking courses. A graduate from the Ramkhanhaeng University, Bangkok. She has always been a good cook (could make 320 different Thai meals) and she got a certificate from the cooking course.
With that, she got a job in a Thai restaurant in Japan (Nagoya) and worked part time (only lunch time when white collars come for lunch, 3 hours a day).
Still, she was cutting, preparing, serving 120 meal sets within 3 hours. But had never had access to the pan and fire. That was for a Thai chef, who went through a Hospitality high school, where cooking was last 2 years of the 4 years of that vocational school.
I may come back to your agency upon next visa extension. My idea of retiring in Thailand is never tobe busy one more minute of my life. And, you are great service.
I said, 2 of five brances of Thai banks just looked at my passport and did not even let me to sit down and talk. My Thai wife of 25 years was with me. Going rounds, for days, until I get lucky?