Funny, The very first time there when I left the school teacher insisted on taking me to the airport. She knew I had just went to the ATM. As I was saying goodbye she said you won't be able to spend the Baht in the US. With puppy dog and I love you eyes.. After giving her the money I knew what was up. hahaha... Thailand has been learning how to fleece the farang, for so may decades it is second nature.