I wrote a long review on Trip Advisor, but just want to say if you are thinking of going, think no more and just do it!!
We had Joe, Shad, Nick and Steve as Guides and they were great! The guides are safe, informative and allow one to simply enjoy.
The highlight is sleeping under the stars listening to the Colorado River! The scenery is to die for, around every corner the Grand Canyon beckoned. It really is a majestic experience.
I want to go again!!!