We took an 8 night Mediterranean cruise on Navigator as part of a charter from Atlantis cruises. They supplemented the RCI staff with their own, but I'll just focus on the RCI aspects of the cruise.
We boarded at Barcelona and then stopped at Marseilles, Livorno, Naples, Mykonos, Santorini and finally Civitavecchia, where we disembarked. This was a great itinerary and allowed us to visit a variety of countries and see some amazing sites.
Embarkation: Both Navigator and Voyager had embarkations in Barcelona so there were a lot of cabs going to the port! We got to the dock a little after one and had checked in and received our Sea Pass cards in about 20 minutes; we had to wait about another 40 minutes to board the ship, but they kept everything moving well and we were able to sit and relax in the large terminal while waiting to board. Best thing was our cabin was ready with our bags in it by the time we got on board.
Cabin is directly in front of the entry from the elevators to the hallway but it was not noisy at all. Plus, due to the bulge in the ship, our balcony stuck out further than others beside us which gave additional privacy.