It can be time consuming but my experience was the opposite. To do my retirement visa extension I started with the help queue on the left. They gave me a list of what I needed. Once I had the paper work ready I went back to the help queue who checked the paperwork and then they gave me a card to see the immigration officer. The immigration officer pointed out a couple of errors I made on one of the forms which I corrected and then I was told to come back next day to pickup my passport.
While there is certainly a lot of red tape I actually I found the staff to be quite helpful despite having to sit there all day dealing with frustrated farang. 🤗
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