The whole point is not to have to take anything out at the airport. Half cash and half THB. I didn't have to start exchanging my US currency until after 4 months.
I had my American bank order Thai Baht before I left. It takes 3 days and you can just go and pick it up. This kept me from having to stop anywhere, except for the ride to my hotel.
I did travel to Thailand from Las Vegas in July with my Chihuahua. Since different countries have different criteria, it's wise to consult with your local vet.
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