The views alone are reason enough to pick a ship over a park. Watching the land slowly disappear as you sail away from a port at the end of the day is one of the prettiest sights you can see. Even better? You'll never have to fight for a good seat — there's plenty of room all over the ship. It's nothing like elbowing for a good spot to watch the fireworks in the Disney parks (speaking of which, there are fireworks on board, too!).
Image Source: Kathryn Mayer