What documents do I need to extend my 30-day tourist visa exemption in Phuket?

The original poster (OP) is seeking to extend their 30-day tourist visa exemption in Phuket and is asking for clarification on the necessary documents for the immigration office. Key points from the discussion indicate that a TM30 document is generally required, though experiences with specific immigration officers may vary. A screenshot of an Airbnb payment does not fulfill the TM30 requirement. It's also suggested that having a TM30 document on hand is prudent. Additionally, due to upcoming policy changes, there may be increased foot traffic at immigration offices.