The Epcot Kim Possible Scavenger Hunt is going to be for 2009 (or so we were told).
On Halloween, they were doing previews and I actually experienced it with my boyfriend. And afterward, we had to fill out a questionnaire.
It's basically a scavenger hunt. They handed us a real cell phone and it instructed us to go to Japan. Once you're there, the Kim Possible characters interact with you via your 'Kimmunicator'.
There's some neat little spoilers but I won't give them away. My boyfriend and I were reluctant about trying it, but were glad we did. On observation, the families with little kids seemed to be more involved and interested in exploring Japan.
I hope it works out.