I wasn't sure if you were hoping to avoid teens or if you had teens too. But if you are trying to avoid kids some, I would suggest you pick a cabin that is away from the main kid area's. That way you shouldn't hear any running in the hall on the way to their center of activities.
We will be going on the Oasis this year too and did pick a cabin that should be out of the kid zone. But usually the ships have pretty good programs I have read. After all it is the kids that are the future business. I only hope they are considerate of other cruisers and well behaved. But they do get excited.