In addition to your luggage and other travel essentials, it is also recommended that passengers bring their own food and water to help avoid potentially long wait times both at the terminal and onboard the ferry. Appropriate weather gear is also recommended, like a raincoat or umbrella.
Bringing games will help keep younger members of your party entertained while waiting to board or during the voyage. Of course, a camera is also recommended for those looking to document the stunning views along the way.