there is a 7 day extension, but thats after the 30 extension 30 +30+7 then leave the country either to a neighbouring country by land get 30 day on return max 2 time pr year, trough airport more but up to imm officer
a 3 month NON-O then go to immigration apply for retirement extention if you have a pension over
*****
pr month you need an income letter from your embassy or consulate, or 800 000 THB in the bank and if marriage visa you need to have 400 000 thb in the bank for at least 3 month before application
gonna do nothing different and most peole fill the form on the plane vefore they come to immigration, now thailand been thinking all by them self again