Yes, have been to Jerome. Also took the train (Verde something). Haven't been to Montezumas castle. The south rim can get packed and it's gotten worse over the past few years (as have several national parks--Zion, ugh). I hate to say jack up the entrance fees...but not sure how you can cut it down unless you do a reservation type thing. Also love Sedona. I'd like to do the 5 parks in Utah....but it's a lot of driving and trying to see all that can be seen. Arches NP is also a nice place to visit.