Like many, we were sucked in by the masterful marketing Royal Caribbean did for Oasis of the Seas -- it didn't take us long to book and once we did, we were very excited to go; we checked out all the ship's virtual tours and videos that were posted on its website, etc.
Our sailing was December 12th. My husband and I (early '30s) sailed with our 4-year old.
I think the decision on whether or not to book Oasis depends on what kind of person you are. We are value people. Meaning we're happy if we feel like what we got is worth what we spent. We did not feel like this on the Oasis.
Good Balcony. Good Location. Close to the elevators but not too close. Quiet with nothing noisy above or below us.