My two best friends and I want to road trip to the Grand Canyon. We have known each other since we were children and we all three just graduated from college. We are all road trip novices and will be starting out from OHio. We plan on leaving June 13th or so. ANy advice or tips offered would be greatly appreciated, especially, interesting places to stop slash see along the way, safety tips, ways to make the time go by a bit quicker, etc.