Our family took the Ultimate Tour on the first day of our visit to the Grand Canyon. Our guide, Keaton, had the perfect voice and demeanor for a guide, and was extremely knowledgeable. He gave an excellent explanation of the geological history of the Grand Canyon, and left us plenty of time to explore and ask questions on our own. He also provided a very thorough discussion about the native peoples of the area, as well as the plants and the wildlife. The drive out to the Cameron Trading Post was a fascinating study of how elevation changes the ecology. The lunch was excellent. This tour provided a terrific overview to start our visit. You will definitely get your money's worth.