What service allows guests to check in for dining and other experiences via their mobile device?

The service that allows guests to check in for dining and other experiences via their mobile device is indeed Mobile Dining Check-In. This feature is integrated within Disney's app, enhancing the convenience of managing dining reservations on the go. Guests can use their mobile devices to confirm their arrival at dining locations, which streamlines the process and reduces the need for physical check-in lines at the restaurant.

The importance of this service lies in its ability to provide a seamless experience for guests, allowing them to optimize their time at Disney parks and resort locations. With the Mobile Dining Check-In, guests can receive notifications and updates directly through their devices, ensuring they stay informed about their dining plans without additional hassle.

The other services listed, while beneficial in their own right, serve different purposes. For example, FastPass Plus is focused on managing access to rides and attractions rather than dining experiences, and Disney Genie+ builds on that by providing a paid service for expedited access. My Disney Experience is a broader app that encompasses various functionalities, including reservations, park planning, and itinerary management, but Mobile Dining Check-In specifically addresses the need for dining check-ins.