What documents do I need for a 30-day visa extension in Thailand as a Canadian tourist?

A Canadian tourist seeking a 30-day visa extension in Thailand can often obtain it without strict documentation, especially in places like Koh Samui. However, requirements may vary by location. It's advisable to check if you need documents like a TM30 receipt or proof of address, especially if applying in stricter immigration offices such as in Bangkok or Pattaya. Generally, you can use any immigration office, but reporting to the office closer to your registered address is recommended.