When our kids were 5 and 8, we drove no more than 300 miles per day. It helped to break that up with an attraction along the way. Our kids were not impressed with scenery that young. In a motorhome, they will likely be looking out the side windows, which is fine in wide open places, but there isn't much to see if there's traffic, trees, or lots of buildings whizzing past in a blur. Movies and video games helped us, but sitting in a seat belt for 5 hours is still just that. We limited driving trips to about 800 miles from home, driving a day or two, then staying put for at least two days. For our cross country trips, we bought plane tickets so we had 4 more days of just recreation. Hopefully your crew has more patience and sitability than mine. ;)
