Despite more than 2,000 passengers the many different spaces on board make it feel as though there are only several hundred passengers. (Except for embarking and disembarking, there were never any long or lengthy lines. Separate areas for "kids" and for teens helps keep other areas surprisingly calm/quiet. Some of the lounges and bars felt as though there were few passengers on board and that you were in a small (but roomy/comfortable) setting. Adults outdoor topside pool/lounge called "Serenity" area was just that. (A caveat: Did NOT attend any of the "shows" in the big theatre so cannot comment on quality or atmosphere.) Music in lounges and bars was generally good and pleasant
Crew were friendly and helpful. All inclusive meals whether in main dining room or top deck multi-station cafeteria were generally excellent. The top deck steakhouse, "Nick & Nora's" ($35/per person additional charge) worth it for a change during the voyage.
The three port steps (Port Canaveral, Nassau and Freeport) were too short to do any real exploring (ca. 8 hours) but that's not unique to Carnival.
Six is one of the best floors to be on. Quiet except when furniture being moved above cabin. Balcony very nice EXCEPT when guests in cabin immediately fore or aft are on their balcony talking loudly; then it was unpleasant and one felt that you were eavesdropping on a loud boisterous exchange. Even low conversations on the neighboring balconies could be overheard. (When I'm on my balcony, I don't have any great interest in feeling as though I'm in the middle of a debate about who is the best quarterback or what's the best beer, or if when the door to their cabin is open, hearing a television turned up to high volume Either better sound-proofing between balconies OR a sign in each cabin asking passengers to keep noise level low when on the balcony or when cabin door is open. If such signage had been used, we would have felt very comfortable asking the neighboring balcony to tone-it-down. Perhaps the people don't even realize that they are being overheard . . .