Anonymous participant No idea on consequences as it is a new visa and checks aren't common for now. You may check what's done with ED visa holders (students). They used to check classes attendance and they just have announced some stricter measures these last days in the news.
Great to hear you're working for thai immigration and already know everything about Thailand. Have you heard about the schools getting checked when you're under an ED visa? Well that's happening! And yes, it has been reported by DTV holders for some Muay Thai schools here. I'm not the only one saying so apparently...