We have done two cruises over the years. In 2007, we did an 11-night Mediterranean cruise on the Disney Magic, and joined with several Disboard members and their families (I think there were almost 70 of us). We went on a roundtrip from Barcelona - Italy - France - back to Barcelona.
My favorite excursions were the private ones we did with other families, especially the one to Pompeii-Amalfi Coast-Positano, and the one in Rome. We went in July. It was a very fun cruise.
In 2019, 10 of us went to Venice for three nights, then a 7-night cruise to the Greek Isles. We LOVED this vacation. We went at the end of May, and things were still a little cool, right before summer heat and crowds. Venice was wonderful - could have spent another night or two there. The
Royal Caribbean cruise was great, and my favorite stop was probably Athens, where we booked a private tour - the timing was great, as was the tour guide. We also really enjoyed Corfu and Mykonos.
My friends and I (four of us) have a Viking Christmas cruise booked for 2023, and really looking forward to that (going from Prague to Berlin).
Have fun planning. There are so many great experiences to be had.
We used them, too, for our Rome and Naples tours. They were fantastic and customized our tours to what we wanted to see. I highly recommend them.