Here’s someone else’s description that goes into more detail as well:

78-cash-advancecounter-withdrawal-my-experience-at-bangkok-bank/

Does your US bank do Cash Advances with your debit card? Mine does and there’s no fee so that’s how I usually withdraw/ exchange while in country. Bangkok Bank didn’t charge me any fees for this either. In my experience this was by far the best exchange rate as well. I can’t remember if there was a limit and what it was though. Worth asking both sides about. It’s called a “Debit Cash Advance”.

Yes, I think it's higher quality thicker steel. I really notice the difference when using the soup spoons. If it's for a gift or decoration then consider the really pretty imprinted design ones.