i assume they check most of these themselves as I only submitted the docs listed in my original post. I think they require the trainer to have relevant certification (point 4).
I guess depends. It will be annoying carrying that printout every time (I assume soft copy will work) but I don’t want to give up a full page for a sticker in my already full passport that has 3 years until expiry.
No, have to print out the confirmation letter and I understand that this printout needs to be shown to the border officer when entering Thailand. I'm going back to TH on Monday so will know better by then 🙂