Hey Knotthead - There is a lot of info in the many threads on TTOL about all this. In short: The 30 foot bubble is pretty loose. We swam and snorkeled much further from our boat as long as no other boats were nearby (which was not an issue as the BVI is pretty empty.....which is awesome!). We didn't try to go ashore during that Q period, but we could have. We also did not get any takeout, but I understand this is possible. Although, I don't recall any of the Q anchorages having restaurants nearby (which is the point, I suspect).
Cheers,

Husker.