New Zealand Tour Review: Milford Sound, Abel Tasman, Kayaking, Whale Watching, Biking, Helicopter RIde, 17-Day Travel

I would not do the Maori heritage tour- it did not meet my expectations at all. Basically just a drive around some parking lots and tea that could be bought anywhere in the world on a hill. I was really looking forward to this.  
I think I would skip the overnight in Doubtful Sound and do an overnight in Milford Sound instead.  They were both beautiful but lots of time wasted driving those days. The helicopter ride back from Milford was amazing!
Also not sure if we would take the train into Christchurch again- it was beautiful but maybe not worth the extra time (and the train was running quite late because of heat).