I've entered, exited and re entered many times, since I got mine in October. I visit my country normally once every month or so, sometimes for a couple of days, sometimes for a month.
not always. I can use my Korean bank native app to get cash at any SCB ATM without using any physical card, and without the 220 baht fee (they charge other things, tho). They're partnered. And I'm assume many other banks from many other countries have also similar partnerships.