Just for information I have today returned from CW with a 60 Covid extension on my METV (60+30 day) I had no problems at at all and was in and out in under 1 hour despite having a feeling that it could be a long day. There was a little hiccup with my TM30 as my apartment had stuck an extra letter in my surname but the senior officer just waved it through. Well done to everyone in the Immigration Department and to this site for advising me what documents to take with me,
TLDR : Answer Summary
The user successfully obtained a 60-day Covid extension on their METV (Multi-Entry Tourist Visa) without any major issues during the process, despite a minor hiccup with TM30 documentation regarding the surname. They completed the process in under an hour and credited the guidance received from the website.