What is the process for extending a non-OA multiple-entry visa in Bangkok and how does the re-entry permit work?

Extending a Non-OA multiple-entry visa in Bangkok is generally straightforward, typically taking a few hours at immigration as long as all necessary paperwork is prepared. It is important to obtain a re-entry permit if planning to leave Thailand with a multiple-entry visa, which can be done simultaneously with the extension process. Additionally, ensure that health insurance is valid as it can affect the duration of the visa extension.