R&D with or with out the C.C. start is a good starter route. All My kids but the 6 year old have followed me up it at one time in there life.
Castle is a mixed bag. Good Climbs and busy on the weekends. I hit it once a Year always on a weekday.
I have done over 20 diffrent routes there the ones I go back and do will always put a smile on My face, Year after Year.
That said there is much better climbing in many diffrent locations in both the Tumwater and the Icicle Multi-pitch and Single, Sport and Trad. Look around people ! Stop following the crowd ! it seems to Me most people go to the same damn spot as everyone else, just to be seen.
The story about the group on Castle Last Weekend is Freaky and those who are responsible should sit there butts down and question there leadership ability.