Just Reporting:
Today , Monday I visited Chaeng wattana immigration office and manage to 1) getting 1 year extension stamp, 2) Doing 90 days reporting 3) Getting residence certificate (paid 1000 Bath and got it in 20 min) 4) fixing multi-Entry stamp , all between 8:30 to 11:20 :-)
They were very helpful and active , they didn't want to keep people gathering in office due to c-virus risk .
And in the afternoon re-newed my driving licenses (MC & Car) to 5 years .
Very good day , good luck all
TLDR : Answer Summary
The author shares their positive experience at Chaeng Wattana immigration office, where they efficiently completed multiple tasks such as obtaining a 1-year extension stamp, performing 90 days reporting, acquiring a residence certificate, and fixing a multi-entry stamp within a short time frame. They appreciated the helpful staff and the measures in place to prevent crowds due to COVID-19.