Never been, but would like to go one day! Have you looked at the schedule on their website? http://www.noao.edu/outreach/kpoutreach.html I guess you're looking for some people who have visited first hand?
Have a great trip!
I have always thought it would be great to attend the Grand Canyon Star party and visit Flagstaff at the same time, think the star party people organise trips..the other day trip would be to Winslow, which is not far off ..so you could be standing on a corner In Winslow Arizona........