After much research and great doubts on the size of the Grand Princess, we decided to book their 12 night Med Cruise as it included all of the ports we wanted to see (Rome, Monte Carlo, Livorno, Naples, Santorini, Kusadasi, Mykonos, Athens, Olympia, Corfu and Venice).
I planned 3 days pre-cruise in Rome, 2 post-cruise in Venice and 2 in Paris before flying home.
We left LAX on a direct non-stop flight to Paris, onward to Rome. I had booked transfers on the Internet, as well as some tours, so they would be paid for in US dollars well before the cruise. Our transfer from FCO to Rome hotel went without a hitch.