and if he leaves after 91 days, does this not affect the visa itself ?

must be a grace period

i fully understand it is a visa run, however will being one day late not void the visa?

just curious on how can one create an overstay when he has a non imm o multi entry visa. Does it mean he lets the visa expire the day before he leaves Thailand ?

oh no, my bet that the HUSTLE with a Non-Imm-O 90 days is by FAR worse than with a 60+30 days SETV!! He must be really careful, not mention "tourism stay", because the requirement of the Embassy of Thailand in Vientiane reads: ""In addition, Non-immigration visas will NOT be issued for such purpose as tourism, visiting friends, visiting fiancé/fiancée, seeking employment opportunities, looking for a school for teaching or studying purposes, etc. Please apply for the tourist visa" So let it be understood that you are looking into the "retirement" option, and must fulfill the requirements which go with it. And the required documents & proofs I think not everybody who is travelling, has them at hand! That's the "hustle" you mentioned? Financial proofs in Vientiane? Gettin the 60+30 Days Single Entry Tourist Visa is by far & way easier if you are looking at 90 days stay

so your first entry will be a 30-day Visa Exempt. This being absolutely no problem, but if you cannot prove an onward flight out of Thailand within the first 30 days you could face a problem with the airline upon boarding the flight at the departing point. It was already mentioned in the first answer to your post

ah and the 90-day question: The 90-day clock starts at number 1 on the day you return. So your next report would be due on 30 of January (not Feb 2). You can do the 90-day report as soon as10 days before this date or even up to 7 day after this date and you should be ok

you could take the risk - it being late for reporting back anyways, and wait for your next 90-day report. You could also do your TM30 any time now, just pay the fine and be good. When visiting Immigration be prepared to pay a fine of around 800 -1600 THB for missing out TM30. And if you are living in a private home or privately in a rented accomodation, intend to stay or extend your stay, or are living on an extension already, it would be helpful that you show up with all documentation required to do a TM30. If you are living in a licensed guesthouse or hotel, you can ignore it, as they would have registered you already

did you do a TM30 any time before after arriving? As regarding the immigration Chumpon, myself I do not have any knowledge if they are strict on the handling or not

Dan Beattie the TM6 ist no proof of registration of an address, as you could as a foreigner write into it whatever came to your mind, without relevant proof or documentation, as at the point of entry, the immigration officers are NOT reassuring that the adress you wrote into the TM6 is correct. The TM6 is merely for Tourism of TH Ministry statistics purposes. Only the TM30 registration is regarded a valid registration. Some Immigration offices yet tend to waive it . . depends on where in TH you are living