Can I apply for a re-entry permit at immigration now or should I wait until closer to my flight date?

The user wants to know if they can obtain a re-entry permit at Thai immigration ahead of their scheduled flight on October 7th, as they prefer to avoid doing it at the airport. Responses indicate that re-entry permits can be acquired anytime during immigration office hours. Some respondents suggest that doing it at the airport could be more convenient and faster. It was clarified that applying for the re-entry permit can be done in advance of the flight, ensuring everything is ready before departure.