What are the document requirements for a Non O retirement extension at the Hua Hin Office?

A user recently shared their experience renewing their annual Non O retirement extension at the Hua Hin Immigration Office, stating that the process is now surprisingly easy. They listed the required documents, including the TM7 application form, copies of various passport pages, a TM30, bank documents, and proof of monthly transfers, while noting that other typically required documents were not necessary. Comments from other users express congratulations and seek clarification regarding the requirement for credit advice documentation.