Do you truly get to experience port cities while on a cruise?

champagnedream9 asked:

I am planning a vacation to Europe in September. After MUCH consideration I think we’ve decided on a cruise. Has anyone cruised the Mediterranean? If so, how was it and did you feel like you got a good experience in the ports? The cruise we’re most interested in goes to Rome, Athens, and some other beautiful places that I’d really like to explore. Any help would be appreicated!! Thank You!