We are sailing on the Viking Sea Empires of the Mediterranean (Venice - Athens) June 6 - 15th. We are doing a pre-cruise extension in Venice so are flying from the US on June 3rd. Viking’s requirement is that we have a negative COVID-19 PCR test taken within 72 hours prior to boarding the first international flight. Does the 72 hour requirement still apply if we are doing a pre-cruise extension? Or does it need to be sooner since we are doing the extension?