Tom Elliott That is also new information to me. Ok then better wait for advise from one of the experts. I only talk from personal experience. But again... this is the first time in 25 years I hear you can apply for an extension after the visa expiry date. This will be interesting.
If your o-visa is valid till 5.11.18 then each time you enter the country you get 90 day. Up till the last day of the visa. So in fact, if you enter on 5.11.18 you get stamped in 90 days. This is my experience on a B-visa i'm pretty sure the same rule applies for an O visa. However, the extension you will need to apply before the visa expires.
True. This is the very reason I started interacting with this group. Even when you quote a law they respond with calling you names and being an idiot and so on.... it's beyond me how the 3 of you
Get a certificate from the institute that is paying your pension. Then get that translated into Thai and notarised by a Thai lawyer. That should do it. I did this for my dad in Chiang Mai. No problem. We did not need any paperwork from any embassy.