exactly. I have COPD and of course I wouldn't go in the burning season. I'm told by a friend who spent Songkran in Chiang Mai a couple of years ago, the ash can fall in quite large chunks, so it's not just a matter of a slight burning smell, it could block the lungs of anyone who is sensitive
You'll have to show you're bringing in savings that have already been taxed. It is a grey area, but it is live since 1 January 2024. Suggest you consult an accountant familiar with Thai tax law
It's known very well already. Transfers into Thailand from 1.1.2024 are assessable for Thai income tax. Unless your country's DTA exempts your pension, for example. Even then, any liability to Thai tax can be offset by tax already paid on that money