The only thing that springs to mind is the High School Musical Pep Rally at Disney MGM Studios, its working like a parade float through the park and ending up at the sorceror's hat for a show, with the singing and dancing from the film. I haven't seen this version yet, only the one they had at MK last year, but DD7 really enjoyed it, your gilrs will love this.
Other than that, it is really hard to find any merchandise at all, apart from CDs and DVDs which we already have here, for any of the other shows. Maybe somebody else has been more recently than October and has seen something more. i do know how you feel though, it was very frustrating not finding anything Disney Channel related for DD when we went.