Keys to the Kingdom is a guided tour of the Magic Kingdom. It highlights design features of the park, operational features of the park, and you usually get to go on a ride or two with the guide. You also go "back stage" and in to the utilidor a few times. Lunch is included in the price. I went in Dec. of last year and it was the highlight of our trip. Takes about 4 hours and have heard that people think it is a lot of walking, but we were comfortable and took frequent breaks. I think there is a minimum age of 16 to take the tour. If you have been to the parks a bunch of times, it is a great way to get a different perspective of the park.