they shluld at least try to get a Yellow Book. I got mine more then a couple decades ago when it wasn't so common and that effort saved me a lot of hassel over the years.
Flew in last night to Don Mueang and heard a Immigration Officer telling a person no more entries without correct visa. Two ladies, Chinese maybe, in front of me were escorted away by IO.
you claimed taxes are on income but taxes are in fact on taxable income. All one needs to do is read the applicable Tax Agreement their country has with Thailand to see what is taxable not all the agreements Thailand has. So easy
The Thailand Visa Exemption program allows citizens of certain countries to enter Thailand without a visa for up to 60 days. This program is for tourism and short-term business trips.