The Wyndham Reef is a nice place, but their AI package seems pretty pricey, especially in high season. Unless you are going to drink yourself into a non-diving compatible stupor every night.
I found it interesting to hear recently that the Reef is offering dive packages with Ocean Frontiers given there is that White Sands place there too, but WS has always sounded more like a general watersports op than a serious dive op. But unless something has changed, I think OF will pick divers up at the Reef and drive them to Compass Point for the boat, not bring a boat there. Tortuga Divers does leave directly from the dock at Morritt's next door.