@Pete ********
The changing is annoying, but made necessary because heavily misuse, which is caused by having loopholes in requirements. For some reason it is difficult for Thai to look already and predict what will happen. The change of visa exempt from 30 to 60 days was made to get tourists stay longer. The average tourist from western countries stayed about 2-3 weeks, Asian tourists did stay 1 week on average. So 30 days was more than enough, the change to 60 days would not get more tourists, but would make it easier for people who wanted to live in Thailand without visa. The DTV in itself is a good idea, but there are too many loopholes.