We opted for a half a day excursion from Raiatea to Taha'a and ended up being the only 2 people on board - I have asked in advance what we want to see and I said: vanilla farm, rhum distillery, coral garden (I have reviewed all 3 individual experiences separately) - and that's exactly what we ended up visiting - nothing more, nothing less :) we left around 8AM from marina on Raiatea, and returned about 12/12:30PM - it was perfect! The fee was 11,500XPF per person, so a bit higher than 9,800 XPF per their website but considering the private tour is listed at 49,500 and we did end up pretty much having one I cannot complain :) cash only
The boat was nice, big (putting aside the fact that we were the only people on it other than the captain of course) and clean - I like some art pieces on it. Julian, the owners' son was our captain and also the lead during the coral garden free floating - spoke English and was very friendly and good with the coral garden instructions.
I had some concerns during communication period about the tour itself, especially during the final couple days as it was during holidays in FP but it all worked out perfectly, exactly how we wanted so I can only say good things ultimately about it all.