Simple or multiple entry visa is needed if we start with changing airlines at Hanoi to Siem Reap and then coming back to Vietnam?
We are coming from Hungary with Emirates airlines to Noi Bai Hanoi airport and then changing to VietJet Air to fly to Siem Reap. Our question is that changing the airlines (and in the meantime some of us picking up luggages and check-in again) would mean leaving the transit zone and entering Vietnam so we would need visa? We will come back from Siem Reap and spend some time in Vietnam. In this case do we need multiple entry visa? Thank you very much for your reply in advance!