Applying for extension based on having a thai child today at Chang Wattana. Provided all documents requested on the list of documents required. Advised I needed a photo of my son OUTSIDE his school. Already provided receipts showing all school fees paid on school paper and a letter on school paper confirming attendance with colour photo. Perhaps a good idea to put that on the list of documents required !
TLDR : Answer Summary
The poster shares their experience applying for a visa extension based on having a Thai child at Chang Wattana. They provided all required documents but were unexpectedly asked for a specific photo of their son outside his school, which they had not anticipated. They suggest that such a requirement should be clearly stated on the list of necessary documents.