well, then all he needs is a proof the money came from abroad, and a minimum of 15 workdays left on his "admitted stay" stamp in order to be allowed the application for the change. Plus a completed TM30, plus a rental contract . . . .
allow me a small correction: there is no seasoning required for the 800.000.-THB when applying for the 90-days visa. However a 2 months seasoning is required when you apply for the change from the visa to the 1-year Extension of Stay
. .and Immigration often during an application, will make a copy of your passport pages, regardless if you supplied them with an embassy certified document or not
Now I found it. (new!) rule says "no more than three times in a 6 month period by flights" . . . . . . . . .Foreigners who enter Thailand under this Tourist Visa Exemption category may only do so for 30 days at one time with a maximum of 3 times in a 6 month period by flight and 2 times a year for overland crossing.
I would however NOT trust the word "unlimited", because if you try that a THIRD consecutive time, you might face being pulled aside and being told "Last time, next time you need a proper visa"
ah, sorry I missed that. Well yes then he needs to do a border run, preferably to Malaysia, as the borders to Myanmar are closed. I suggest using a "visa run company" that will get him from Surat Thani to any Southern border with Malaysia and back