Yes, there does have to be something. And there is--same was what they did for EMH:
But I do think there is a valid critique that this will be just a tad trickier and less user friendly than EMH from the guest perspective because the window is so narrow. A short WDW bus delay, difficulty sorting out a magic band that doesn't scan right (this ALWAYS happens to my son for some reason--we've had to replace his MB so many times because even guest services couldn't get it to work), something in the diaper bag triggers the metal detector, needing to stop to
rent a stroller or
scooter, and poof, your thirty minutes are gone.