Went to Samui immigration to get extension on visa waiver. Already had 30 days extension so went to apply for additional extension due to not being able to fly.
I am Australian so no embassy letter was available. Only got 7 days extension.
If you are going to Samui immigration at the moment, best to arrive 8am or earlier.
TLDR : Answer Summary
An Australian expat sought to extend their visa waiver at Samui immigration due to an inability to fly. After already receiving a 30-day extension, they were granted only a 7-day extension without an embassy letter. Others advised that an embassy letter could facilitate a longer extension, suggesting a potential process to secure a letter and applying for an emergency extension.