Normal
Not I, but my bro did. Unless you luck out and are the odd pair out you will be in a grouping because of the total costs to the group. They don't make as much money if using pairs (unless you pay extra for the privilege) I would suggest booking by yourself except that its Grand Cayman and ships often miss that Port. So unless you can make an arragement on your own similar to the ship that if you don't dock you dont pay I would not go that route.