If you look at Viking visa requirements by country for Vietnam, it allows Australians to get a multiple entry visa upon arrival at the airport when they land. I asked if we as US citizens could do the same and Viking said no with no explanation and stated we must use GenVisa as eVisas were not acceptable. We did not want to risk any issues arriving in Vietnam. We recently sent our visa applications to GenVisa . Will let you know If the visas they return are eVisa or not. I think the business side of Viking is horrific. This is one of numerous issues we have had with Viking for this cruise and the upcoming WC. A Viking agent said it will be better when you board the ship. Basically acknowledging the issues with business side. So much for good customer relations. Sorry for the rant.