Are people needing to book a queue for non b annual extensions at CW? Other years you had to queue and get a number in the early morning but with limited seating I had heard they wanted people to book and get a QR code prior to arrival
TLDR : Answer Summary
It is now possible to book an appointment for NON-B annual extensions at the Chaengwattana immigration office, moving away from the previous system of queuing early in the morning. You can make a booking online to receive a QR code before your arrival.