For lunch we had wraps, cream cheese and salami or tuna purchased after landing in Las Vegas. All the rest of the food was brought from home.
Breakfast was oatmeal.
Dinner was the dried meals that Emily had prepared.
For snacks, we had dried fruit, one power bar per day, and some Logan Bread. Follow link for recipe for Logan Bread
We planned to stay the first night just outside the park in the little commercial area by the airstrip. Being close would help us hit the trailhead early.
All the campsites we stayed at have year-round streams, so we had access to water with little sediment (using water from the Colorado River is challenging due to the extremely high sediment load, can clog filters quickly). We purified the water with iodine pills.
Day 1, Trailhead to Hermit Rapids, it is a very long day if you want to make it all the way to the river, but it was the only day we would be at the river. It was important for us to make it down to the Colorado River. The river is the primary force that formed the Grand Canyon, and there is something special about seeing the river up close.
Day 2, Hermit Rapids to Monument Rapids. A short day, but had access to water.
Day 3, Monument Rapids to Indian Gardens. Relatively easy day, as not much in the way of elevation.
Day 4, Indian Gardens to South Kaibab trailhead. If we were tired, we could have exited via the Bright Angel Trail, but I much prefer South Kaibab for its open views of the inner canyon, and it extended our time in the Grand Canyon.
You have to reserve campgrounds, and the minimum time is three months in advance. Follow the link to the Permit Application page. I applied on the first day (via fax). Since our route was off corridor, the Rangers did communicate back and forth with me to ensure we were up to the hike, and offered good suggestions. We liked our campsites, as we made it to the river, and had access to water at each camp.
We took a topographical map of the Grand Canyon and we had the Viewranger hiking app on a tablet. The trails are very well sign-posted, so although getting lost is a possibility, it is very easy to navigate in the canyon.