Really helpful suggestions. We have reservations for the American RV park noted in Albuquerque for a portion of second week of balloon festival. Thanks also for the tip regarding freezing in Williams early October. We don't have all our itinerary firmed up yet due to some key info we hope to get from family who may meet us along the way and have very restricted schedule, but hope to get that this weekend. We're much more flexible so have two general plans identified, one which would put us in AZ & Grand Canyon area before the balloon festival and one which puts us at balloon festival first. So, we don't know if we'll do San Antonio/Tucson on east or westbound but definitely one or the other. Appreciate all the info and suggestions from others..