Many years ago on a visit to Hydra (Idra) via a "Flying Dolphin" from Pireaus, the harbour activity, and the WHOLE of the local scene was one of an old Western ghost town. About half an hour later, the place errupted into activity a couple of minutes before one of the cruise ships rolled in, shutters opened, tables laid, music the whole gamut. This lasted untill the gangplank was raised and the ship cast off, total of about an hour, then mass shutdown and back to normal.
Saw this with the arrival and departures of the tourist buses in the villages around the M25 equivalent in the mountains on Crete.
Regards Ian