Hi there - two Aussies planning a trip to US in May 2015. We will be spending time in the Grand Canyon National Park travelling by car from Las Vegas. I have a couple of questions. What is the drive from Las Vegas to GCNP like ie lots of traffic or freeways? Is there much to see on the way?We plan on lodging in the park (Yavapati) for seven nights. We are not really sure at this point on what we are going to do but would like to do some hikes, maybe a heli ride and maybe a raft trip. If we stay in the park we will have plenty to do for seven days? All help appreciated.