We travelled as a family of four, one daughter aged 14 and son aged 10. We sailed from Venice after spending our first night on board. Princess laid on shuttle water taxis, which you could use as many times as you needed for the price of one ticket - ideal if like us you wanted to visit Venice in the evening, and then I took the opportunity to go back the next morning on my own to have a wander around in peace - no children!
First impressions of the ship were very good, huge, clean, lots of bars and dining rooms and good kids clubs. We were in an inside cabin, enough space for 4 so long as you all didn't want to get ready at the same time, but to be honest we don't spend a lot of time in it, just sleeping. Only downside was their was no kettle/tea/coffee - bit of a let down for the Brit's! I think it's so princess can charge you for a coffee card - which we didn't purchase but did take advantage of the soft drinks package - very good value at $50 for as much cola/sprite/cherry drink as you could get down you.
We ate in the main dining rooms 10 nights out of 12 - never waited long for a table, so long as you didn't mind sharing, which is a good way to meet other people and share cruising experiences. Went to movies under the stars a few times, the blankets/popcorn/cookies all nice extras.
Didn't do many of the shows, not our thing but most people we spoke to seemed to enjoy them. Photography was very good and lots of pictures were bought, I would particularly recommend Dominic, he was very good at putting you at ease.
Our cruise was very port intensive - only one sea day, but the ports in the greek islands are a delight and would highly recommend a cruise to the eastern end of the Med.