It's handy to make payments and not withdraw 20k baht at a time as paying 220 baht on every small withdrawals is silly. Good if your homeland bank rips you off on ATM exchange rates as you can send a large sum in one go via a money exchange service when rates are good and keep in the Thai bank. Useful to pay bills and pay for phone packages too. Was handy to buy a car too.
Anonymous participant the DTV is a multiple entry visa so you can come and go as you please. Applying for a visa to another country whilst having the DTV visa is totally seperate