We had excellent service throughout this cruise, with one major notable exception in the dining room that resulted in us moving tables.
The entertainment options were pretty average variety shows. The singers and dancers are talented, but the productions aren't great. It's something to do, still.
We chose the cruise for the ports, and we were disappointed that Ephesus was traded for Rhodes. Still, Rhodes was surprisingly wonderful, and we found Athens to be the most disappointing.
Despite being close to the centrum, I was pleasantly surprised by how quiet our room was at night. Still, bring ear plugs. A few nights when they have louder parties later at Centrum, you'll need them if you plan on sleeping instead of dancing the night away.
We did the tour of Castemola with wine tasting. We thoroughly enjoyed it and felt it was good value. Taormina was not available during out cruise due to preparations for the G7 summit.
All transportation to and from Delos and back to the cruise ship was handled smoothly. Our guide to Delos was great. We had plenty of time back on Mykonos to explore independently. Delos was an amazing city. Highly recommend.