@Wade ***
, here's how those 60 day visit family extensions work. They can be gotten for being married to a thai or for having half thai children. SOME immigration offices allow you to get it once per entry on a visa (meaning you could get the 60 day extension on EVERY 90 day entry from a Non-O visa)
BUT
SOME immigration offices allow you to get it once per VISA (meaning you can get the 60 day extension once on any 90 day entry and then you're done until you go buy a new visa)
IF you got a 60 day visit thai family extension since the last time you entered the country you cannot get another one.