You can still book online if you don't know your vehicle registration or if you will be hiring a car. Simply enter “TBA” (To Be Advised) into the vehicle registration field on the Passenger Details step of the booking process. When you have your vehicle registration details to hand, please add this information to your booking by logging into the My Pages section of the site as this will avoid delays at the port. After logging in and identifying your booking, simply select the 'Change' tab then select the 'Change vehicle details' option to edit the vehicle's registration details.