I read quickly over the replies, so if I repeat anyone, my apologies.
In general my impression of the At through the park was that the first day was the most difficult, followed by the second day also being somewhat difficult. From there out it’s easier, but there are still some challenges. The hike out from Tricorner gets a little rocky and this can be hard on the ankles after popunding downhill for 12-15 miles. We needed to get out for travel reasons and pushed it…and payed for it with swollen ankles.
Keep in mind that you are required to have shelter reservations which can be made 30 days in advance of your trips first day. Also note that some of the shelters are off the trail a good bit, 0.4 mi or so, which you may need to factor in when considering water sources.
Re hiking w/ kids, we passed a southbound family including two young kids, probably 6 or 7-year-olds. As they approached I greeted the lady in front. “How are you?” Her response was “I’m ready to be airlifted out.” She was not happy, the kids were not happy, the kids were dead and asking “how much further.” This was 4:30 and they had 5+ miles to go. Talk about being in the doghouse!!! Come to find out they had stopped to eat supper at Silars and a fella there said the kids just laid on the platforms and were very tired. They just seemed to have bit off a bit more than they could chew. I just don’t think the kids were having any fun at all.
Stuart