What are the requirements for renewing an O/A visa for retirement at Sakaeo Immigration?

To renew an O/A retirement visa at Sakaeo Immigration, you need the following documents: passport with a copy of info page and current visa stamp, a copy of TM 6, an updated bank book with all pages copied, a 12-month bank statement, a bank letter, completed TM 7 form, one photo, a location map, an insurance certificate, and TM 30. Ensure all copies are signed. The process can be completed quickly, as noted by one user who finished everything, including the 90-day report, in about half an hour.