My wife and I are in our early 50s and felt like we lived a dream for 10 days. The best description of this cruise is SPECTACULAR! The ship is brand new, beautifully appointed, and although gigantic, it had a personal feel. We NEVER waited in line for anything (other than embarking), and found numerous "quiet places" when desired.
The entertainment was first rate, whether it was listening to the pianist in the Atrium, enjoying one of the great shows (Piano Man, Undercover) in the Princess Theater, the comedy of Kevin Hughes in the Explorer Lounge, a string quartet in the Wheelhouse, or dancing to the band in Club Fusion.
The multinational crew treated us like royalty. Our cabin stewart "Juan" kept our stateroom immaculate and was there at moments notice when needed. The waiters and waitresses were engaging and helpful with food and wine recommendations when asked.