The is an Office on Beach Road Patong. Go to this one early in the morning and you will be finished in 20 minutes. All photocopying and Passport photo's can be done there for a small fee.
I tend to think it will be extended. We are spending money here instead of elsewhere so... It's possible when Visa runs become viable again they'll can it. But it makes sense to keep it going for the foreseeable future. $$ make Cents...
I went to Chaeng Wattana and it was a one stop shop. 60 days Covid stamp, no return in 2 week. Everything was done in one step. Every place maybe different.
All facilities are provided for you at Chiang Wattana Branch. Passport photo's and photocopying facilities. They even have glue there for you to stick your photo on the form. The downstairs area is fully open with banks and shops etc. Everything is there don't worry.