What documents do I need for my 1-year marriage extension in Thailand after receiving a 30-day 'Under Consideration' stamp?

The user has a 30-day 'Under Consideration' stamp for a 1-year extension based on marriage, and seeks information on required documents for the next appointment. A commenter suggests that the user does not need to bring their wife, but should ensure to update their bank book on the day of the appointment to reflect a 400K balance. They should also have a copy of the updated bank book page and their passport, and report to Section L-2 on the due date for the extension to be inked.