I am going to Athens, Greece for a week in early October! I have a conference to attend Monday - Thursday, and then I was thinking of taking a short side trip to a nearby island (or islands) for a couple of days before flying. Very excited!

So... what to pack and what to see/do?

My Greek coworkers say that it is still quite warm in Greece in October (around 70 degrees F), warm enough that apparently people still go swimming in the ocean. It sounds to me a lot like Southern CA weather. But what are people actually wearing there? The footwear is what is perplexing me. 70 is warm enough for sandals for me, but would the locals still be wearing them in October? Or would there be a more fall-like style, despite the weather? I think boots would be too warm (and heavy) for me. Oxfords maybe? If one of the slipper flats/loafers I just ordered works out, that might be a good idea. And is the style different in Athens vs. the islands?

Also, coat. Is it necessary? I was thinking of bringing my blue trench because it is lightweight and packable. It's kind of a technical fabric and quite thin, so not very warm but provides a block for rain and wind. Would this be warm enough? I will also have a blazer or two (for the conference), a scarf and sweater of some sort for the plane, that I could layer under in case it's cold. Another coat option would be one of my leather jackets, but the downside is that they weigh a lot and I like to travel light.

Does anyone know if conference rooms/venues in Greece are as ridiculously AC'ed as they are in the US? This will also determine which and how many jackets/scarves I have to bring!

I welcome any suggestions for what to see, do, and eat in Athens and nearby too! I will be relying on public transit. My coworker suggested that I take a ferry to one of the Saronic Islands (less than a 1 hr ferry ride) as I will only have a couple of days to spend after the conference, probably not enough time to go out to one of the more far-flung islands. Do you have a favorite island to visit that is close to Athens?