I’ve just returned from a short, but very enjoyable trip down to the Grand Canyon and Zion National Parks.
A few thoughts for anyone organising something similar…
Camping
In the Grand Canyon I stayed at the huge NPS Mather Campground which was nice enough. However it sells out quickly and for those who don’t want to plan so far ahead, or would rather not spend the $$$ I’ve since discovered that there is dispersed camping available in Kaibab National Forest, just outside the park. Details here.
Food
On the drive from the Grand Canyon to Zion, Kanab is a good place to stop for food. I would particularly recommend the Kanab Creek Bakery:
http://www.kanabcreekbakery.com/.