Parent room
What if we offered an exclusive parent room at sights with younger child programming? It would offer more comfortable seating, access to USB outlets and regular outlets for charging phones/laptops, maybe even a water cooler? Have a phone in there with a sign that says something about a teacher is calling one of you, please answer. If music is piped in, have it quiet and relaxing.
I mentioned exclusive, right? I'm picturing parents swiping in with their ID card. No kids allowed. Parents would pay for access to this exclusive area.