If you want to change your ferry time before you travel, the quickest and cheapest way to change your booking is online using My Account.
Some ticket types let you travel on an earlier or later sailing. You can check your ticket type on your confirmation email (under the Passenger Details section). Click here to send yourself a new copy.
If your ticket type allows it, there's no need to contact us; just head to the port, and they'll let you on the next available sailing.
If your ticket type doesn't allow you to travel on an earlier sailing and you're already on your way to the port, the best thing to do is show up and see if they will let you on, as it can be expensive to change your ticket on the same day you travel.