Can a Cambodian national extend a 15-day visa exempt stay in Thailand?

A Cambodian national entering Thailand on a 15-day visa exempt stamp generally cannot extend their stay according to immigration hotline information. The current consensus is that while there is no official limit for extensions set by law, local immigration officers have discretion in these matters. However, since Cambodians only receive a 14-day entry irrespective of their arrival method, exiting and re-entering Thailand is a suggested alternative to obtain a new visa exempt entry.