This permit essentially “freezes” your visa’s validity, allowing you to return to Thailand without having to reapply for a new retirement visa. With a re-entry permit, you can freely travel in and out of Thailand without worrying about jeopardizing your retirement visa status.
Really? It does not mention anything of the expiration date of the stay permit stamp. I used to believe that the re-entry right have to be used at least one few days before the end of stay permit date stamp in the passport and new extension will start at the same day as the end date of the last stay permit date. Sombody here knows the facts about this?