Hi Darlene,

Most of the guides who run the PG excursions are local guides, the same guides who service other tourists. Unless there's something special that you want, there's no real reason to go private.

On Bora Bora, I believe the stingray ballet is similar to what used to be called the shark and ray feeding. If so, it's wonderful, and certainly the one I would choose, if you particularly like snorkelling. You might be able to do two excursions, one in the morning, and one in the afternoon, but you can also probably just go to the motu in the afternoon (if the ray thing is in the a.m.) The snorkelling's not great there, but the beach is lovely.

Welcome, and have a great trip!