great place to visit and very very popular was just there in may you can get a mh into some of the overlooks ok and the visitors center has a huge parking lot but some of the overlooks it will be very tight or impossible.
if you are towing a car use it to see the canyon if not rent one for the day,we didn't take ours due to the couple going with us didn't have enough time off for us to drive the mh.
it is beyond description on how amazing it is but best seen from a car
happy travels