We just got back from our much anticipated (3 year wait) vacation on Royal Caribbean's Oasis of the Seas. The ship is HUGE. Unlike the previous cruise we took on Carnival Pride, where we never felt like it was crowded, we felt on a number of occasions that they could have probably cut down on the people aboard by a thousand on OOTS. The ship is nice - it just depends on what you like and what you are looking for.
Background Info:
34 YO husband and wife traveling with 2 small children (ages 3 and 6)
Cabin 10263 - Nice cabin, towards the back of the ship, ocean view balcony on the 10th floor, right next to stairs and elevators. No noise from other rooms but you can hear people as they talk in the hallways. Luckily our floor was a quiet one.