Kiosks should be fine - I think you've missed some details on what is going on. The update won't lock iPads that are unlocked. If a kiosk iOS device is "always

Kiosks should be fine - I think you've missed some details on what is going on. The update won't lock iPads that are unlocked. If a kiosk iOS device is "always on" and never requires a passcode, then it it won't ever lock hence won't start the 7 day timer.