Please excuse my stupid question!

I am making my first trip to Thailand next month. I checked today about obtaining some Baht to take with me and the service fee is pretty expensive and the exchange rate is not good. I'm concerned about having some local currency right away, so that I can tip the driver who drives me to my motel, etc.

Am I safe to just wait and use my ATM card in the airport upon arrival. I have heard that there are plenty of ATM machines in the arrival area of the airport. Are they clearly marked and will I be able to locate them easily?

I told you it was a dumb question! I just want to make sure that I have some currency available to me RIGHT AWAY! :oops:

Should I buy some Baht to take with me or just wait to use the ATM machine at the airport?

Thanks for your help and advise.

Hobie