What should I expect during the annual marriage visa extension process in Thailand?

The user recently applied for a yearly marriage extension visa in Samut Prakan, Thailand, and shared their experience. They noted that the immigration office did not ask for any insurance documents this time and humorously mentioned how officials asked their wife the same questions about how and when they met, a recurring inquiry during the application process. Their current visa expires on June 29, and they were instructed to return on June 30, despite it being a Sunday, with the suggestion to call on June 28 for clarification.