I haven’t seen the auto DND but putting DND in my calendar events (and could be included with invites/wallet tickets which we would then accept) is a pretty nic

I haven’t seen the auto DND but putting DND in my calendar events (and could be included with invites/wallet tickets which we would then accept) is a pretty nice idea too. True it is ripe for abuse, hence why I was suggesting a geofence which requires setting up a physical waypoints around the enclosed space — not just a Wi-Fi hotspot telling your phone to keep it down. They could require a key purchased from Apple which then could be reported for abuse. Probably cheaper than foam case locks.