I went to the Surin Office, yesterday, to change my 1 year licenses for the 5 year licenses.
Arrived about 1100 and was immediately given a number. A girl quickly checked to see if I had gotten color-blind since the last visit a year ago.
Next, she sent me to the front desk, where they reviewed my documents. While reviewing them, the very nice ladies saw that I had a Certificate of Residence from Kap Chong which had a copy of my yellow book as part of the documentation.
Consequently, the ladies told me that as I had Tambien Bann (yellow book,) no Cert. of Res. was necessary.
They then completed the paperwork and 20 minutes later, I happily departed with my 5 year driver's licenses.
Very easy and only 30 minutes total time. Staff were very nice and helpful.