I was unable to get an extension of stay at Phetchaburi immigration because my hotel said they only issue [whatever that address proof is called!] to people staying one week or longer. Is this normal in Thailand? Is there an immigration office where it's easier? I'm Canadian on a 30 day visa exemption, expiring Dec 23. PS I've used up my two visa exempt land entries for 2018. I'm hesitant to fly out and back in after hearing about people getting refused.
TLDR : Answer Summary
The user experienced difficulties obtaining a visa extension at the Phetchaburi immigration office due to hotel regulations regarding proof of address. Other users shared their experiences, suggesting that some hotels incorrectly refuse to provide address proof and that immigration offices in Bangkok or Jomtien may be more lenient. Instructions were offered for filing a TM.30 either through the hotel or by the individual online, as well as advice to obtain proof of address for the extension process.