When should I apply to extend my retirement non-O visa before my holidays in Thailand?

The user is seeking advice on the timing of extending their retirement non-O visa as they have upcoming holidays planned. They are inquiring whether to start the extension process before or after their travels, specifically asking about the retention of their passport during the application. Commenters indicate that applications can be made 45 to 30 days prior to the visa's expiry, and that most immigration offices typically return passports the same day. Some offices may require a next-day pickup, but this is less common.