if you've done any snorkeling in nice water you'll be disappointed by CC (at least the family beach snorkeling area)...
in any case, we were.....we thought it was pretty awful....
but we're used to snorkeling in a coral reef reserve (we just came back from a week there in fact.....snorkeling in the reef and scuba diving with the local dolphins)....
the CC water was not at all the pristine water i was expecting in the carribean.....and since i'm used to seeing much more beautifully exotic fish where we live, the fish at CC were also a disappointment...
but if that's all you have to go by then i suppose you might enjoy it....