Your best to ask the clinic not here. Are they registered ,can they do paperwork for you. Don't ask here most don't know. I haven't seen anyone apply like this. Not same as Muay Thai they are registered
Are you for real ?? You think you are the first to get a new passport with long-term visa or stamp. Your DTV is an email so you have it electronic. Your stamp is for 180 days take your old passport if you want. Immigration has electronic record you think the only record is your stamp please this has been discussed here 1000 times. You are so naive about your visa and passport it's your responsibility to know before you get to this point. Don't be lazy
Anonymous participant you want the visa or not. Mor lam is your passion good on you do as you like. But if you want the DTV follow what is required why make life difficult for yourself. Just because you enrol in Muay Thai doesn't mean you actually have to participate. Do your research first or your wasting your time. You are in isaan haven't herd anyone actually doing Muay Thai there. Take the route of least resistance. Good luck with you singing
Anonymous participant 841 rubbish your visa gives you entry if they would deny you it would be when you apply you would be denied. If they issue you a visa you can enter the checks have been done already.