Haven't done that particular cruise company, but did honeymoon in Tahiti/French Polynesia.
Highly recommend getting to the off-islands. We stayed on Moorea, Bora Bora, Rangiroa and Manihi. The only thing on Manihi was the "hotel" (roughly 25 "huts") and an airstrip. Rangiroa wasn't much bigger. Both were amazing.
French Polynesia is IMHO one of the prettiest places on earth. The colors of the waters are like nothing you've likely ever seen - the greenest greens..the bluest blues. Closest thing to paradise we could ever imagine. Would go back in a heartbeat if it weren't so flipping expensive..I think it cost us < $10K 25+ years ago for 2 weeks there (4 islands including inter-island flights, and over-water bungalows on Moorea and Manihi - beachfront about 25 steps to the ocean on Rangiroa) and it was well worth it. Would be at least double that and possibly even more now..
Some day I'll have to tell you guys the story about my battle with the Ghekos on Bora Bora..pesky little buggers, and we couldn't imagine them running across one of us in the middle of the night. (Yes, they get into your "hut" - the windows are pretty much open always and the roof is thatch..so nothing to keep them out, and they come and go as they please..yikes).