What are the requirements and experiences for extending a visa exempt in Patong, Thailand?

A community member shared their experience of extending their visa exempt for 30 days at the Patong immigration office. They provided useful insights, stating that the process was smooth and required only a copy of the passport, a copy of the stamp, a photo, the completed TM7 form, and a fee of 1900 THB. They noted a discrepancy with Phuket Town immigration, where additional residency forms were requested. Other comments clarified that some immigration offices may ask for residency documentation, specifically a filed TM30.