Going for a Grand Canyon Tour from Las Vegas, it is best to take coaches. They are comfortable and you don't have to do something so you can relax on the way which is taking some hours ride. Your driver is normally your tour guide. He or she brings you to the interesting viewing points of the Canyon and gives some trivia questions on the road. It's a bit pricey but well it's worth it. And by the way, lunch is already included plus a complimentary breakfast.