FYI, one year extension based on marriage -from amnesty: Had 30 days under consideration from July 15. Went back to Korat imm. this morning handed them my passport, wait outside 10 minutes. They bring my passport back stamped in till 14 July 2021 (not September). No wife, no bank book, no questions
TLDR : Answer Summary
This post discusses a recent experience with renewing a marriage visa in Thailand based on an amnesty provision. The original poster successfully obtained a one-year extension without the need for a wife or bank book, which has been confirmed by comments detailing that many immigration offices do not require financial documentation during the extension process. There is also discussion about variations in requirements across different regions in Thailand, highlighting the difference in practices between immigration offices.