No, it is not mandatory for every family member to have the My Disney Experience (WDW) or Disneyland App on their own device, though it is highly recommended for adults. In 2026, one person—the "lead planner"—can manage the entire group's tickets, dining reservations, and Lightning Lane selections (via the Genie+ successor) from a single phone. This person simply links all family members under their "Family & Friends" list. However, if the group plans to split up, those going off on their own will need the app to access their digital tickets or make their own ride reservations. For children or elderly guests, the lead planner can even use Disney MagicMobile to add everyone's tickets to a single Apple or Google Wallet, allowing the family to enter the park by scanning one phone multiple times. While one app is sufficient for logistics, having multiple people with the app allows for "divided labor," such as one person mobile-ordering lunch while another checks wait times for a nearby attraction.