We have traveled throughout Europe on several trips but have not yet explored Greece. With cruise fares especially low just now, this option looks tempting.
Although I know that we will not be able to immerse ourselves in any of these ports of call, it might be a fun way to explore the region. I'd appreciate any reviews from you if you have been on a similar cruise. The itinerary is Ancona, Santorini, Mykonos, Athens, Corfu, Olympia, Croatia. Costa and RCI offer similar cruises. We are seasoned cruisers in the Caribbean.
We spent a week in Athens and took a guided bus tour every day to other parts of Greece.
I can recommend taking those tours if you have time. We weren't interested in cruising; so I can't help there. Others will provide lots of advice for you.