Can I activate my NON-O visa with a border bounce if I'm on a visa exempt in Thailand?

The user inquires about activating a NON-O visa using a voucher/QR code from their embassy while currently holding a visa exempt status in Thailand. They ask if it's necessary to leave and re-enter the country for activation and whether a border bounce is sufficient or if a flight is required. Various comments confirm that both options (border bounce or flying back) are feasible but suggest considering the timing relative to the expiration of the visa exempt.