Jillfg & Sage,
Welcome to both of you!!! I'm fairly new to this board myself. I had been lurking for a couple of years on Cruise Critic and now have found a home here on LCT. Great group of people.
I was on the Navigator's 10/02 Australia/New Zealand cruise - our very first cruise. Sage, it is true - once you sail Radisson, you don't want to leave :) :) Your upcoming cruise to South Pacific and Hawaii sounds wonderful!!!!
Jillfg, I know you'll be delighted with Radisson and the Navigator. Rather than repeat myself, you may want to go to another new post here "Need Radisson Cruise Feedback" by Cruisebound2005. I mentioned all the reasons we loved Radisson and the Navigator in my reply to that post.
Also, I agree with Margo about reading Masaki's report of the Navigator. He is a wonderful writer with ton's of detail. Please, please read that. It will answer a lot of your questions.
If you have any specific questions, I'd love to help out in any way I can.
Cyndi