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.