Thanks for everyone's kind words!
@1stClassFamily, definitely try to do the bottom-up day hike... you get to see some of the most spectacular sections of the Narrows. And we saw a couple of younger kids doing the hike with their parents, so it's great for the whole family!
@CMK10, haha I think I'd actually prefer WN. It's been equally as long (if not longer) since I've flown US, and I don't plan on doing it anytime soon

It
is kind of strange that WN has a monopoly on that route tho... seems like it should be pretty popular.