Yes a couple of brothers on Phuket, I believe they found the whole experience frustrating. Last I heard they had gone for a motorbike burn up to work off their aggression
I am sure it will be ok if the cops don't stop them.
I looked into doing it but found it to be far too complicated. It involved, the children having no other Thai relatives, being absolutely dependent and the home country bring involved.
Do not come in burning season. It can kill. Air full of cancerous smoke and can't see mountains. Take up a 100 a day smoking habit. It is healthier than Thai air. Seriously do not come while it is dangerous and take no notice of all the vested interests who tell you it's harmless. Look it up for yourself. Look aT the NASA burning maps and make your own mind up.