What special event occurs during weekends in the summer at Disneyland?

The correct choice highlights a unique nighttime experience at Disneyland, which typically offers special entertainment, themed activities, and exclusive character meet-and-greets during the summer season on weekends. Disneyland After Dark events are particularly popular because they create an immersive atmosphere, allowing guests to enjoy the park after regular operating hours. These events often focus on specific themes and can feature special food offerings, merchandise, and entertainment that enhances the overall visitor experience.

The other options do not represent the specific event that occurs during weekends in summer. While the Summer Nights Event might suggest a celebration during the summer, it does not capture the specific, exclusive nighttime experience found with Disneyland After Dark. The Weekend Character Fest implies a gathering or character interaction program but lacks the distinctive elements associated with a themed nighttime event. Lastly, the Star Wars Celebration is a larger fan event usually held at convention centers, rather than being specifically part of Disneyland's regular summer programming.