My problem will be with the cruise line giving me my Drone back when we pull into port. They may want to see proof I have permission to fly in Greece. I just want to have some kind of paper work with me to show them so I can get my Drone when we pull into port.Don't worry just take your drone with you. I don't think you gonna have any issues at in Greece(Ports, Islands).
Some of them they don't actually know what a drone is....