If you do end up staying at LeTahaa I would love to hear your opinion. We just booked a week for next October and are looking at the pre-cruise options. After reading trip advisor I was really seriously considering LeTahaa - the only concern that I had was the fact that you pretty much have to eat all your meals at the resort. However this resort gets wonderful reviews. Having done the PG in Sept. 03 I was also considering Moorea as that was our favorite island from the cruise. We met 2 couples on the cruise that did post-cruise stays on Moorea and loved it - I believe that they stayed at the Pearl. Bora Bora was not on our list for the reasons others have stated - just too commercial for our taste. Whatever happens you will have an incredible time and will definately be trying to figure out when you can go back.
Steph