Ah, yes the track thing. Ain't it grand.
The DIS is THE place for those of us who plan. The planning keeps us going, too. I have a notebook with everything plotted out. Calendars with early and late openings for each park, which restaurants to try. And an Excell spread sheet with shows, formal nights, port times, menus, etc. Ye gads.
Snorkeling should be great. Have never done Cayman, but it was legion when DH and I used to scuba in the days BK (before kids). We were in Coz when it was a tiny place many moons ago. Last cruise, we just taxied to a great little spot in Cozumel and snorkeled from the beach, but I have heard that it was pretty wrecked, and "Cozumel Ian", who keeps the Hurricane Wilma spot, recommends getting a boat and going further out, so Coz may be more complicated than I want to think about now. But, at least when our kids were younger, it was easier to get them to snorkel when they went from a boat rather than a "beach". No surge from waves at the shoreline and tripping over rocky entries. (Long story here about getting Ian into the water at St Martin, when he was 6, yuck.)
Carla