Does anyone know if it's possible to get an extension of the 1 year entry stamp for an Elite Visa holder? I have until October 20th on mine as I last entered Thailand on Oct 21 last year. My 5 year Elite doesn't expire until July 2024 (+ hopefully the 6 months added to it for free as we all got) so plenty of time on it but the thought of having to try to leave the country and re-enter this year doesn't sound realistic.
TLDR : Answer Summary
An Elite Visa holder can indeed extend their 1-year entry stamp by visiting the immigration office when they have 45 days or less remaining on their current stamp. For this individual, this means they can apply for the extension anytime after September 5th, leading up to their deadline.