My husband and I are both 30 and this was the first cruise for both of us.
We booked a Concierge Class room on the 12th deck (where the Pool and Spa were) and could not have picked a better location. We were at the very front of the hallway near the elevators, but never heard any noise from people walking by or the elevators. It was great to be able to walk right out of the room to the pool deck or just up one flight of stairs to the Oceanview Cafe.
We signed up for a Cruise Critic "meet & mingle" party which proved to be a huge mistake as there were several people who showed up apparently just to complain. It was only the second day of the cruise and this loud obnoxious woman kept going on and on about all the things that she disliked about the ship. Another fellow was griping about the shore excursions. I'm thinking, you KNEW what they were before you booked the cruise, so if you weren't interested, then why did you pick this ship?!? Anyhow...it was a colossal waste of time, and I wish we hadn't gone. I actually felt sorry for the cruise director because I could tell he was caught off guard being bombarded with complains so early in the trip!