What are the requirements for extending a DTV visa in Thailand?

The user shares their recent experience at the Krabi immigration office while trying to extend their DTV visa. They encountered unexpected requirements, which included resubmitting original documentation, providing a picture at their rented house, a map of the location, a signed landlord letter, and landlord ID. Frustrated, they suggested that it might be easier to leave Thailand and return instead. Commenters agreed, noting that many find it simpler to obtain a new 180-day stamp by briefly exiting the country rather than dealing with the complexities of the extension process.