Great crew, inconsistent entertainment, noisy passengers

The crew and management on the Carnival Dream was excellent and well organized, and the food was good. In the dining rooms and steakhouse, the food was even occasionally surprising in its creativity and flair. We were disappointed in the quality of some of the musicians -- two of the five were "greatest hits" ensembles that had a deep and extensive songbooks of covers, but didn't offer much beyond that, giving us the feeling that Carnival thinks it's best to serve the common denominator instead of retaining truly interesting talent with unique skill or style. Also, the "shows" in the Encore theatre were inconsistent -- several felt like space-fillers rather than thoughtful offerings. Karaoke, which was the activity that interested me the most, often didn't start until 10pm -- making it inaccessible for me (who needed to rise early each morning, prior to excursions, to use the fitness center). But the worst part of our experience on this cruise related to some of our fellow passengers. I was looking forward to being on a ship with a diversity of age groups, young and middle and old. And that expectation was met. But cliques of young adults on the cruise nearly spoiled the whole experience for us. They would gather in public spaces for several hours, drinking and yelling and chanting. (I even heard from a crew member that there were "incidents" of fighting on board.) Late at night, roughly 50% of the time, our neighbors yelled in our hallway and through closed cabin doors, showing no consideration or respect for neighbors who might be sleeping. We were awakened and reawakened by cabin and balcony doors being carelessly slammed behind the exiting person rather than quietly shut -- sending vibrations as well as noise through the walls and floor. I know that a crew cannot control passengers' behavior (nor would I expect them to). But the "Fun Ship" branding and the "Cruise for All" motto has, apparently, created a culture in which some people feel that only THEIR fun matters. The only way I would consider sailing on a Carnival ship again is if I could book a cabin in a specially designated part of the ship that had firm "quiet hours" (say, from 11pm-7am), so we could at least be assured of sleep at night.