Thank you Tod Daniels for all your input!!!
Hello all!
USA passport holder here.
I did my extension via E-Visa.
Súper easy and quick. No waiting with 100s of people.
New office for E-Visa extension by appointment only.
They printed my documents for me. I already had my copy of photo. So please have that. I paid my 1900 baht online with card.
The staff is wonderful!