Thank you for the thoughtful input and I agree with you completely as to evaluating the purpose of the cruise and more details on it.
I would love to visit Aus & NZ and always have, but also feel I would prefer a ground tour to actually see them. The only reason I would consider this cruise is the 5 days in NZ ports, but really only leave out of Sydney. The cruise is 30 days, of which 19 are at sea - which interests me, but maybe because I'm a novice cruiser.
As for the Tokyo cruise it's 18 days through Alaska which I would like to see again and then 3 port days in Japan. I would love to make it to Japan for the cherry blossoms, but the timing will be a little late for that. Japan is the only Asian country I have any interest in seeing.