Just came from the US Embassy in Bangkok to do financial document and everything went smooth although they normally do 60 appointments a day, today and tomorrow they have 550 appointments.
They say this document is good for 6 months through the transition faze and should be honored during this period by Immigration.
TLDR : Answer Summary
A recent visit to the US Embassy in Bangkok for financial documentation went well, even amidst a much higher than normal number of appointments. This documentation is valid for six months during the transition phase and should be recognized by Immigration authorities during that time.