Can I apply for an early extension of my Non-Immigrant O visa based on marriage in Thailand?

The user inquired about the possibility of applying for an early extension for their Non-Immigrant O visa based on marriage, which is set to expire at the end of September. They expressed readiness with all necessary finances and paperwork and wanted to know if they could apply for the extension before the standard 45 days prior to expiry. Comments indicated that most immigration offices generally only allow applications to be submitted 30 days or less before the expiration date, with some allowing 45 days.