Sheldon, our tour guide, made this Grand Canyon tour an unforgettable experience. I was hoping for a group of like minded people, since we were spending the entire day with them, and that is what we got. Sheldon was kind, funny, very entertaining, knowledgeable, and just easy to be around. He wanted us to experience the sites and beauty and not just take pictures, reminding us to drink water, and put the phone cameras down at times and just be with the magnificence of the area. We highly recommend.