As far as snorkeling goes, I've been lots of places in the BVI. My favorite two places are along the shore of Great Caminoe right "behind" the moorings of Marina Cay. There is even a spot to moor you dinghy.

Then, there is a new-ish place along the shoreline of little yost while moored at Diamond cay.

I thought the Indians were so-so, the caves at norman were so-so (some some squid there), the snorkeling at Anegada was terrible (coral damage). Monkey Point was pretty fun. Once it was calm and millions of minnows and that drew other fish. The other time the wind was out of the wrong place and it was really choppy in there. Was still worth going.

I used CatCo twice and had a good experience both times. Provisioning is easy on Tortola with Bobby's. You can pre-order or just go there and figure out what you want and have them deliver it to your boat.

Glad to answer any questions I can answer. We did three bareboat trips in the BVIs.

Rich