Anyone got the official Greek source for this requirement, other than the Princess website that says "The Greek government requires guests to take a COVID-19 test (PCR or Antigen) within 1 day of embarkation"?
Also - wondering - do guests on the ship for a 14 nighter that calls at Athens need testing prior to arrival there (so onboard) and/or if they go ashore for the day do they need to be tested to get back on to the ship?