I also booked a VIP tour guide when we were there during the week of Thanksgiving 2011. It was money well spent. My three kids and I rode all the rides we wanted to in all four parks. When my daughter couldn't ride, our guide stayed with her, and entertained her(!) while my boys and I rode the scary rides. She was an older, grandmotherly type woman. My DD loved her. We had this guide for 10 hours. I will do it again when we visit in November 2012.
It was a very busy and crowded time when we went. By having our VIP guide, we were able to ride what we wanted to in one day. For the rest of our vacation, we took it easy. We slowed down and enjoyed every little thing that most people would bypass. We live in California so we do not have the luxury of going often. So if we did not have a VIP tour guide, we would be rushing, every single day to stand in line for rides and not taking the time to see the 'little things.' The kids and I played the Kim Possible game, three times, in fact. When we went to DisneyWorld the first time in June 2011, there was no way we were going to stop to play a game. It was rush, rush, rush for everything.
Having a VIP tour guide was wonderful and well worth it.
gloria