You are correct
@Stuart ********
you can indeed apply for a Non-O visa inside the country based on being over 50 "retirement". It is a multi-step process that works like this
- arrive here on a 30 day visa exempt or a 60 day tourist visa entry
1 - get your thai bank account open, and transfer in 800K baht
2 - go to your immigration office and apply for the 90 day Non-O visa for 2000baht
**NOTE you must have a minimum of 15 days left on your current stamp to do this at most offices
the application will go under review for 2 weeks
3 - go back to immigrations, get the Non-O visa and a new 90 day stamp inked in
- wait until your funds are seasoned in the thai bank account in your name only for 2 months and you have less than 30 days left on your new 90 day stamp
4 - go back to the immigration office and apply for the year extension for 1900baht <- it will be issued that day (or in pattaya you come back the next day to pick up your passport)
That is how the process works start to finish.