Got a friend here from Finland on a 30-day exempt entry (with 30 day extension) who is going to do a visa run to Vientiane. His passport is expiring in under 6 months, so he acquired a new one in Bangkok and got it today.
Does he need to get the stamp transferred to the new passport at Chaengwattana before exiting? Or would he be able to exit with both passports (stamp in old one) and apply for a Lao visa + new TRV with the new one?