At The Hague you need a special certificate issued by SAT … and letter which is quite complicated and take some times to do it with the ministry (gym needs to contact the SAT) If you don’t mind going to Vietnam, I recommend ☺️
Thai embassy in Italy is very friendly & work quite fast ☺️ you can contact Muay Thai camp in the province you would love to live in. Feel free to let me know if there is anything I can help, I’m in Chiang Mai