Thanks for the replies. I appreciate Lan's caution. It seems that, as a comfortable kayaker and snorkeler, strong swimmer, and sensible person, it should be okay to kayak out to the reef to snorkel.
The diver-down flag makes a lot of sense, as it would raise the profile higher above the water.
Some people suggested keeping the kayaks tethered to us, which might work in sufficiently still water, but I prefer to trust an anchor point, and I prefer to not have a kayak attached to me like that
We would never allow our kayaks to hit the reef, which means that we really need to know where the tie-up buoys are. Is there a map of them?
Finally, as there are risks involved, it would be nice if we could find another couple of people to go out with us, so we're not just two people. Anyone else going to be on AC Nov 22-27 who wants to kayak out to the reef with us to snorkel?
Thanks! We're on the plane in 24 hours!
-Jay and Yoshiko