Hi, we are thinking of going to Ireland on a standard 4 hour ferry, (not speedy swift) for Christmas, either with Irish ferries or Stena Line. They both do suitable size kennels. You can book a kennel in advance with Irish ferries but not with stena line. I am just wondering has anyone done this journey or taken their dog on a ferry journey of a similar length. We also have the option of leaving him in the car, probably in his crate, with both ferries. I wonder would he be freaked out by both options, or is one better than the other? Would he get sea sick, wee, poo everywhere and be too stressed? I have thought of a DAP collar and spray, but does anyone have any experiences out there?