From the National Park Service webpage ( http://www.nps.gov/para/ ):
This will be a 8 to 10 day trip. Travel time from LA to St. George is about 7 hours with another 3-4 hours to the rim. We will limit the trip to a group of 6/7 vehicles with a minimum of 4. The dates will be May 1, 2015 to May 9, 2015. For a better idea of what to expect, visit our trip report to the Parashant from 2009: viewtopic.php?f=118&t=1319 .Grand Canyon Parashant's natural splendor provides a sense of solitude to those who venture into its isolated domain. Located on the edge of one of the most beautiful places on earth, the Grand Canyon, the Monument's expansive landscape encompasses a chronicle of natural and cultural history.
Camping and hiking in the Monument is an adventure with over a million acres to explore. Only primitive camping is available.
Here are a few views of what to expect:
Toroweap
Mt. Logan
Pakoon Basin