I tried many banks on their different branches in Bangkok and pattaya. Most will outright reject you by asking work permit.
Eventually, got one from Bangkok bank in one of the mall branch. I had to have a consulate stamped letter of sorts verifying address. I just put my hotel address.
I might have gotten one in the Bangkok bank located in the pattaya central festival mall but I needed a trip to my consulate, so I didn’t go through. But they were the only once it was even possible on a visa exempt entry. This was about 4 years ago though.