It's hard to imagine doing so easily what it took explorers valor and hardship to do. You can't imagine a more romantic place. I particularly like the South Pacific itinerary because you're in a different type of nature, different currency and different culture every day. You have time to leisurely uncover the whole cultural core of French Polynesia. The people are wonderful and the trip is relaxing.
Carnival does a fabulous cruise much more inexpensively.
And Premier is newly positioning itself as a force in the family market, but that remains to be seen. You can pack for a week in a manila envelope for one of these trips. Crystal also has excellent food. Though you'd almost never put giant ships in this category, they have a large number of suites - and those passengers get very different service, in terms of privileges, attention, butlers, etc. They really know how to do it.