I've been to Rodriguez - both sides. The last time was this past April. Pick the side based on the wind. It isn't the most wonderful of anchorages. The water has gotten incredibly clear there though - I definitely noticed the change this year. Snorkeling should be really fun throughout the area.
dreaming? when are you guys going, im looking to shoot down in my little islander 24 for a week or two with some friends from west palm beach... maybe well ride down together, i hope itll be blowing like it has been...
the ocean side anchorage off rodriguez key has some poor holding, lots of grass. put down two big danforths or other grass holding anchors.
go snorkling on the unmarked reefs about a mile or so east of rodriquez - you can spot them on the charts. anchor in the sand and snorkel over to the reefs - some parts are shallow enough to stand on if you get nervous.