Quick update having just got back from CM immigration. I arrived at 1.40pm, and was done within 30 minutes...
On arrival I was confused as there seemed to be 3 "entrances". I didn't fancy the covid-19 "screening" area on the right so headed to the covered area in the left of the car park which I believe is the doc check area(?) However this seemed to be a mix of people sitting down or wandering around and I couldn't work out if there was a queue or if they were just waiting for something.
So I skipped this bit too and went straight to the "Information desk" inside the building. Inside was 80%-90% full, but no queue so went to window & explained I'd booked an appointment and was here to extend elite visa. The guy let out a sigh which wasn't encouraging but he took the pile of paperwork I'd brought including a pre-filled out TM7.
He gave me 2 forms mostly in Thai to sign, then took passport and money and said to take a seat.
As I wasn't given a number I was concerned I might get forgotten and still be sitting there at 4pm. But after about 15 minutes they called my name, went to left hand window and took picture. Waited another 5 minutes then was given back passport with stamp until Nov 2023. They also reset my 90 day report counter to day 1.
So overall no complaints, and certainly was done quickly. It was quite confusing though, and kind of on the warm side with no aircon.