Design a touchscreen table for a restaurant.

Focus on the user experience and functionality of the touchscreen table in a restaurant setting. Consider how diners will interact with the table for ordering, payment, and entertainment while ensuring the interface is intuitive and visually appealing. Think about the integration of features like menu browsing, customization options, and potential upselling. Address the physical design aspects, such as size, durability, and ease of cleaning, as well as the backend requirements for managing orders and payments. Lastly, consider how this technology could enhance the overall dining experience and differentiate the restaurant from competitors.