We had a wonderful time, just enough busy and free time. All the arrangements went flawlessly, so there were 'no worries'.
Riding wombat the camel into the desert at sunrise, and climbing the Sydney Harbor Bridge. The Sunset Uluru dinner and sky (star) talk complete with didgeridoo player was truly awesome - I haven't seen the sky like that since childhood. The Barossa wine valley tour was so cool. We enjoyed the Sydney Harbor cruise and the Opera House tour - it is such an amazing building. Adelaide is such a relaxing city, and Sydney is so cosmopolitan - they are a wonderful contrast.
Take more time and see more things! We would have taken the "Ghan" overnite from Adelaide to Alice Springs, also found a way to stay overnight in Coober Pedy to noodle opals. Next trip, we will.