Open a second bank account (perhaps an ongoing term deposit) and simply transfer 100 baht every few months from one to the other to keep both accounts active. As Tony says non-activity will result in the account being closed and although it's easy to reinstate the account you have to be physically there to do it. A simple regular transfer will do the trick
Ok. You don't know what the topic is. It's about having minimum 20,000 baht in cash when entering on a visa exempt or tourist visa. All good. Go have another beer
You can strongly disagree as much as you like. I'm talking about LEGAL teaching. If you want to work in a shitbox school earning shit money it's all good. If you want to earn good money in a good school you have to meet the requirements