What documents are needed to apply for a 30-day extension on a 60-day visa exempt entry in Thailand?

To apply for a 30-day extension on a 60-day exempt visa at an immigration office in Thailand, you generally need to bring specific documents. While requirements may vary by office, a commonly mentioned necessity is a TM30 receipt, which indicates your registration at the local area served by that immigration office. Additionally, each office provides a list of required documents, so it's advisable to check with your local immigration office.