Research, research, research if you want to make the most of RCI's Eastern Med cruises unless you just book excursions through RCI and they do all the work for you.
We did our own thing at all of the ports on call and saved hundreds of dollars, if not a thousand by doing so.
The Navigator of the Seas is a great family cruise ship with lots to do onboard from ice skating,Basketball, Putt Putt, Table tennis, Rock climbing etc.