Outside food and non-alcoholic beverages can be brought and consumed on board the ferry. Due to state law, alcoholic beverages that are not purchased on board the ferry cannot be consumed on the ferry.

Eating on a ferry is not only permitted but is often a central part of the onboard experience. Most ferry operators, from short harbor shuttles to long-distance lines like Stena Line or P&O, feature a variety of dining facilities ranging from casual snack bars and cafes to full-service restaurants. Passengers are also generally allowed to bring their own food and non-alcoholic drinks to consume in designated seating areas. However, some luxury or overnight ferries may restrict the consumption of outside food within their formal dining rooms or premium lounges to encourage the use of their internal catering services. It is important to note that bringing your own alcohol is almost universally prohibited for safety and licensing reasons. For short-distance commuter ferries, "grab-and-go" snacks are the norm, while international crossings often offer buffet-style meals and themed bars where you can enjoy a full dinner as you travel across the water.