It's vital for the tourist industry for the uncertainty to end as soon as possible. The last four months have seen little progress. Tsipras and Varoufakis have openly insulted just about everybody, and Junker has, allegedly, now stopped taking any phone calls from Tsipras. Neither side appears to have made any significant concessions at all. The EU etc haven't faced up to the extreme damage austerity has caused to the Greek economy; the Greek government hasn't taken seriously the need for structural change. What we see is a collection of billy-goats bashing their heads together. But ultimately, unless a deal is reached, it will be the Greek billy-goat that will go on the barbecue.
Those of us (75%) who go regularly to Agios Stefanos will see it in personal terms: the friends we have made in the village, and our desire to see them prosper. We will return. But for those merely thinking of where to book a holiday somewhere, anywhere, it would be entirely sensible, unfortunately, to chose Turkey or Spain. It's very important this year that we vote with our feet and help the local economy.