My wife and I just got back from a Mardi Gras cruise which we used my offer of free grand suite and DOU on the whole ship. We are both getting offers. I’m offered the free suite and DOU on the entire ship with a +1 and she’s getting free balcony room with DOU on the entire ship with a +1. We want to bring her parents with us but give them one of the rooms. Any advice on the best way to book it? Do I add one of her parents to my room and she adds one to hers? One couple would have a key to a room but would have to stay together. If I call to book it, will they allow us to book both rooms and put them on the one room?