Live and let learn

@Benj****

okay.. If that's true.. then forget what I said ;) did not know that. Thought that was only for extension and retirement/marriage non-o

You can't get the initial ED visa inside the country.

@Inès ************

are you talking about an extension of an original 90 day ED visa? That would make more sense.

@Barry **********

my embassy stopped already (danish)

@Robert ******

thanks.. got my answer :)

Seeing as the departure is not until late January, it leaves them plenty of time to acquire a turist visa from the nearest Thai embassy. That would both be the cheapest option (while avoiding overstay), and they would not have to spend potentially a whole day of the holiday in an immigration office to extend their 30 day visa exempt.

your 30 day visa exempt is canceled when you leave the country. There will be no issues getting a second in the timeframe from the previous.

No

you could get a multi entry turist visa before going to Thailand. That would get you almost 9 months of stay in total, after which you could go to a nearby country and get another single entry visa for 60 days and extend another 30.. Or you could get either the single or multi entry before coming to Thailand, and then before that expires, apply for a one year extension at immigration based on being the guardian of your son. I believe that would require 500.000 baht in a thai bank in your name, I dont recall how long it has to be seasoned, but i am sure others here can tell you that.