I'm nineteen (so still a teen), so maybe i can help you out a bit. My family has been more times than I can count, and we've stayed just about everywhere. I don't know how your family likes to do WDW, but our family of four (with my brother being 15

this year) has never really stayed at the hotels too much during the day.
We stayed at CSR two seperate years because we booked last minute. It's nice with the neat pool and all, but I can honestly say I can't remember enough about it to tell you too much so that might tell you about teens at CSR.
We have stayed at WL. It's gorgeous. This is a pretty ok one to take a teen. The pool is amazing and they have the lake with the jet boats etc (the ride to the parks isnt too long either). I made quite a few friends at the pool side and so did my brother 3 years ago. This is a good Christmas resort (depending on when you go.)

Our number one place(s) to stay are the All Star resorts

. (Yes some people may say Ick! Value resort). With the value, ya'll can do many more things with the saved money. We have always loved the AS especially sports. Theres two pools that ALWAYS have a ton of people. Theres a basketball court that peopl are always on, and even though its not a true football feild, the younger generation still gets games of football going. There is an arcade in the main lobby that always has people in it, and the gift shop is great too. Plus is really close to all the parks (and with sports you get picked up first and dropped off first)
Hope this might help even though its kinda long.
-Ashley