I dove with the Paul Gauguin two years ago and they use yoke adapters just as we do here.
I noticed you're from McKinney, Texas, me too!
You're in for a fantastic time and great diving. I wrote a review of my trip which you can find on Brown and Keene's cruise website. You might find it interesting.
http://www.brownandkeenetravel.com/tahiti_-_reviews.htm Let me know if I can help with any other questions