Keep the phone available through the event
A stadium visit can depend on a phone long before the main event begins. Guests may need it for tickets, event information, messages, photos, and transportation. A battery problem can therefore affect several parts of the visit at once.
Juice Boxx renters use the app to rent a portable charger from a station. The charger stays with the guest while the phone charges, then returns to a station. This fits an arena or stadium where people move among entrances, seats, concessions, restrooms, and shared areas. It also avoids creating a fixed waiting area where guests must leave their phones or miss part of the event.
