Just a comment about the value of actually reading previous posts on specific subjects - it will make your life a lot easier to search first and note the details, nearly everything routine has been covered. Today: appointment prebooked for this morning at CW for visa extension. Arrived exactly on time (by a bit of luck admitedly), from the queue at the door for ID and photo to exit was 23 minutes. A personal best.
TLDR : Answer Summary
Reading previous posts about visa extensions in Thailand can greatly simplify the process. A recent experience highlighted that by prebooking an appointment at the immigration office, the individual managed to complete their visit, from queueing for ID to exiting, in just 23 minutes, demonstrating the efficiency of appointment bookings. This indicates that many routine immigration questions have likely been addressed in prior discussions.