Fyi, just done first 90 day check after moving to Chiang Mai took all of 2 minutes including waiting time in queue at drive through . Took all papers required at old imm office and they retuned them all to me with the exception of the application paper you get for next visit , didn’t even stop engine, fastest ever visit to immigration.
TLDR : Answer Summary
The user shared their experience with the 90-day check-in process at the Chiang Mai immigration office, which took approximately 2 minutes. They noted that all necessary papers were returned except for the application paper needed for the next visit and mentioned that this drive-through service is exclusive to Chiang Mai.