Bit late but thought this might help someone. Recently (30 days ago) went to Ho Chi Minh to apply for a 90 day Non B.
Did not have to show any funds at either the Thai consulate or DM airport.
Did not have to show any hotel booking for Thailand.
Did not have to show an outbound ticket from Thailand.
They turned around my non B next day, despite the website saying 2 days.
TLDR : Answer Summary
A user recently shared their experience applying for a 90-day Non-B visa at the Thai consulate in Ho Chi Minh. They reported that they did not need to provide proof of funds, hotel bookings, or an onward ticket during their application. Additionally, they received their visa the next day, contrary to the official processing time stated online. Other commenters discussed the variability in requirements across different Thai consulates, emphasizing that Non-B visas primarily require documentation from an employer rather than typical traveler documents.