It will likely be in the area of $14k per survivor plus a discount on a future cruise in the neighborhood of 30%. The deceased, well, that will be litigated. The fine print that no one reads when they purchase tickets limits recoveries, even in cases of cruise line negligence, and in Carnival Concordia's case, the cases must be filed in some tiny village in Northern Italy as it is the jurisdiction agreed upon by purchasing tickets. Fine print - it's a bi$ch!
You can contract away normal risks associated with an activity, but no matter how hard you try it is very difficult to contract away your culpability for gross negligence such as taking deliberate action to put your ship on the rocks.