Each embassy applies its own conditions. If nobody in the group has experience of the Thai Embassy in Belgium maybe try to contact them to ask their local requirements
whatever! It was in the Royal Gazette was it not? If in there it is law. The DTV including the Workaytion category was published. Are you now an expert on Thai Constitutional Law? Even an image of it here
SETV is a single entry tourist visa for 60 days and can be extended for 30. METV is a multi entry tourist visa valid for 6 months and 60 days each entry and 30 day extension. The SETV is very simple but not needed for most as 60 Day Exempt. METV was a little more hassle but not too difficult
SETV - of course they are. Do you mean METV? They are more likely to be issued in your home country or country of residence. Like any visa no hassle if you qualify. People are going to apply for bthese as getting hassle for Visa Exempt - many of the "month on month" (FIFO) off guys coming in on Visa Exempt are getting questioned recently
Have a look at previous posts in other groups. In and out often on Ed is likely to attract attention to yourself. More likely to be questioned about attendance and progress.
If under 50 then Ed with a multi re-entry permit. Having said that the multi-entry might be an obstacle as you are meant to be attending classes 🙂 Maybe a METV then renew or a SETV - that would get you almost a year.