HIH is explicitly a family event. The organizers and trail leaders work hard to make sure the event is as family friendly as possible. Most of us are parents that can sympathize with baby and toddler troubles. The scenery in the San Juan Mountains is stunning no matter where you are so any time we have a break or stop the convoy, people will have plenty to see and enjoy. Never feel guilty about having to stop the train. I was leading a trail last year when we had a dog toss its cookies in the back seat. We stopped and waited patiently for humans to take care of the mess and make the dog more comfortable. With all that being said, you will still encounter a sense of urgency with most of the runs because we have so many vehicles getting through all the same obstacles and trying to stay on a schedule.+1, my worry since signing up is our little one. If we have to take a long break to calm a frazzled baby or change a diaper blowout I don't want to make the entire crew wait.
Oh, and my experience has been with little kids (mine at least, when they were little) is that off-roading is actually soothing and calming to little ones. My kids would often zonk out whenever the cruiser was moving.