Just a heads up for anyone in Chiang Mai. Welcome to tourist season. I came to immigration at 5:45am and I got ticket 87 for student extension only. That's not including tourists or anyone else. This is my 2nd ED visa and I have never seen it this busy. The waiting area has had a constant queue of 150-200 since 6am. Please feel free to come earlier and wait if you have plans for the afternoon or want to get an appointment at all.
Tomorrow is a holiday as well. Immigration is closed.
TLDR : Answer Summary
The author shares their experience at Chiang Mai immigration during the busy tourist season, noting that they arrived at 5:45am and received ticket 87 for a student visa extension, highlighting a long wait of 150-200 people in line. They advise others to arrive early to avoid delays, especially with a holiday the following day when immigration will be closed.