If you haven't recently sailed on her PLEASE do not believe most of the negative reviews. The Queen Mary 2 is stunning and in very good shape.
That's the short length review. The medium review, or summary, is that the Queen Mary 2 is the last true Ocean liner and it is like walking into a time machine of beauty and tradition. It may not be for younger cruisers and you won't find amusement park rides, rock climbing walls, skating rinks, or spiraling pool slides. You will find a ship that feels more like traveling in the 1920's-1940's aboard a stunning, grand, very traditional ship.
The full review: