I know lots of my daughters' friends were Disney listeners and some still listen even though they are now adults.
Personally, I am very thankful for the role Disney is playing in broadcasting a format that is geared to teens, tweens and young children. Disney acclimates children to listening to radio on a regular basis...
Arbitron hasn't figured a way to really get kids to tell them what stations they listen to. Kids aren't reporting no matter what Arbitron insists. It's the parents & oftentimes we have no clue, just guessing.
When my daughter was about 9 years old she received a letter from a company that requested her to report what candy she ate. After so many months the company would give her a list of prizes to choose from as thanks for her reporting the candy she ate. This continued for aobut a year or two. ... Take a guess who filled out the survey all too often... Me, her dad... Sometimes she would tell me what she ate, other times I would take note of what candy I saw her eating but all in all it was difficult securing the information. Her friends would give her candy at lunch and she might tell me what she ate or she might not... Was the report she sent back to the company accurate. No way.