One advantage of Wise is that you can block the exchange rate when you order the transfer. You cannot do that with banks, they will just transfer at the rate current when they launch the process.
it depends where your Wise account is domiciled. If you open a Wise account with a UK address you can get a Wise multi-currency debit card and use it in Thailand. If you open a Wise account with a Thai address I think you cannot get a debit card, you can only transfer or withdraw from ATM.
I have done it previously, multi entry visa, valid 1 year for 90 days stays. You can enter Thailand anytime during the year validity but stay only 90 days each time.