Whilst I dont disagree with getting out of UK I wouldn't recommend relocating to Thailand!
I dont think he has looked at what's on offer regarding his children's education?
As a family unit what is on offer, go visit some temples, the water park, pop into Market village for a European breakfast at a few 100 per person or find an ex pat restaurant or some Thai street food.
Perhaps at night you could go see a film? You and the misses pop into local bar for a drink? Maybe you could all take up golf?
Seriously have a rethink perhaps go for a months holiday then make a decision.
Good luck.