GreeceThe wind gets a vote on your itinerary
Aegean summers come with the meltemi, a dry northerly that can blow hard for days at a stretch. When it does, the harbour authority can suspend departures, and the smaller the vessel, the sooner it stops running. None of this is disorganisation: it is a safety call taken that morning, port by port, and the commonest reason a Greek plan changes shape. Which makes the timetable you screenshotted in spring a statement of intent rather than a promise. The version that decides your day is the one the operator is publishing an hour before you were meant to sail.
One cancelled crossing moves five other things
Lose a boat here and the loss is rarely the boat. It is tonight's room, held by a host who will let it go by eight; the car waiting on the far side; the friends already down at the beach; and, at the end of it all, a flight out of Athens that no weather will hold for you. Each of those is a message, a call or a booking screen, and they all want answering inside the same twenty minutes. Regulars leave a spare day before the flight home for precisely this, and they keep the confirmations somewhere they can reach standing up, not in an inbox that needs a café password first.
On a day trip, the last departure is the real closing time
Archaeological sites keep hours that move with the season, and in a serious heatwave the exposed ones can shut for the hottest part of the afternoon, announced that same morning. The busiest now sell entry for a stated time, and the code that gets you through the gate lives on your handset. Set that against a small island's short list of sailings and the day builds itself backwards from the last boat rather than forwards from breakfast, provided both lists in front of you are current.
An island is not one place with one road
Nothing changes about a handset when you step off the quay, but the ground does. Plenty of islands are a spine of bare rock with villages hung off either side, and the cove worth the trip sits at the bottom of a switchback, the monastery out on a headland, the taverna everyone recommends at the end of an unnamed dirt track. Hills, stone and long empty stretches between settlements are harder ground than a city street. So do your loading where the day begins: the pin for the cove, the route back over the ridge, the number of the place holding your table, all pulled up while you are still in the harbour with a coffee in front of you.
