I am definitely NOT trying to start any resort war here, but I must offer a different opinion. I am sure your kids will have a very good time, heck they are at WDW, but my teens do find OKW too quiet and inconvenient compared to staying at a Epcot resort. They very often will take off by themselves or meet up with us later at a park, restaurant etc and they love the convenience from a Epcot resort, going to parks, etc from OKW is not nearly as easy when you have to rely on Disney transport. They also like the active atmosphere of the Epcot resorts right outside the door at nighttime, when they are always ready to go, go, go vs the roll up the sidewalks at 9:00 PM atmosphere. My teens always liked the extra room a 1 BR at OKW provided but never enough to want to stay there vs an Epcot DVC resort.
I am sure there are tons of teens that prefer OKW but I just wanted to share another side especially for teens that are used to the super convenience and variety of things to do that the great location a Epcot resort provides.