sorry, disagree again, education is not necessarily "terrible in Thailand" even outside the international schools, and a few of them aren't so great. One simply must do your hw, and visit potential schools, view the facilities, visit classrooms, talk to other parents, etc. My children and other friends' children have been absolutely fine. Of course, if one is expecting schools in Thailand to be as good or better than schools back home, they will sometines be disappointed, but if one is moving to Thailand with the impression everything will be similar to where they came from, then why move here, or to any foreign country??
don't you get it? all the advice is not necessarily wrong, but enough of some posters is, and then arguments/debates begin and how is the OP to know which to believe? look how defensive u got about your comments being correct.
get OA outside, get O inside, yes, various rules, just follow the rules where u plan to get it, if outside listen to embassy/consulate, if inside, listen to immigration. all the pros and cons one can read the details and judge for themselves.
that half the advice is incorrect, that regardless of the point u made, it's still more effective to get the information from official sites, then Google. i know so many, many, many who have managed quite nicely by doing that rather than trying to sort thru various FB posters' comments as to which is accurate. i know, i am being "unkind" to expect someone not to do even the most basic research on their own.
another wonderful round of helpful FB comments and debate exactly why I say repeatedly, use Google and official govt sites where the details of Non-O and NON-OA are clearly detailed and one can see for oneself the differences and then determine which might be best for you.
Additionally, of course, many, if not most, of the larger, reputable carriers will not even offer coverage to those 65 and over (yes, for some carriers if you were with them prior to age 65, they will continue to cover u past age 65, but often there is an age deadline on that, or the annual premiums grow so large they can be unaffordable.)