I am planning for a trip Sept 2014. I have not booked the Vegas part of the trip but I have booked my nights at the G Canyon. Originally I had planned to visit Vegas, G Canyon, then Zion NP and Bryce Canyon. Now I am reconsidering the Zion & Bryce loop. What if I instead headed south to Sedona. What are some of the must see things in Sedona? Would it be a good option to the Zion & Bryce trip? We are 2 retired seniors. Would Sedona be a good change of pace from the G Canyon?