I'd opt for Kaibab Lake CG, too. But it might fill up early. Have Dogtown and White Horse CGs as options. BTW, have you considered Bonito CG (Coconino NF off US Rt 89 east of Flagsff) with Sunset Crater Volcano and Wupatki National Monuments right there inlieu of Petrified Forest? My family found both much more interesting than "looking at a bunch of old rocks, again." Their initial reaction to the Grand Canyon's South Rim was similiar but the North Rim left a major impression. Well, you can only do what you can do and hope for the best when travel with off-springs .