That probably works great for your children, and I'm very happy for you, but not shouting works a treat for me. If a child slept through shouting that was loud enough in my house to be heard (we have 3 foot thick stone walls) I would be worried about their hearing.
Also, I mean this in the most polite way possible, but unsolicited parenting advice is often not received as well as one might hope.
I rejected wireless intercoms at the time because every wireless thing I bought had horrible sound quality, like the worst walkie-talkie. Even with simple analog electronics, wired had good sound quality.
I did install some speaker wires, but the times when I wanted to play music in one room and hear it in another are just about never.
Guess I'm just not finding any point to home automation. Even if I had installed a home automation system, the intervening years would have turned it into expensive obsolete junk anyway. I've heard of people, when they try to sell their homes, having to rip it all out and put in conventional wiring.
What did pay off was running Cat5 and RG6 cables in a star configuration. Wifi has improved greatly, but it's nothing like a wired connection for smooth, problem free operation.
>I did install some speaker wires, but the times when I wanted to play music in one room and hear it in another are just about never.
I have speakers around my house, including on my deck, wired to a stereo receiver for music and I do use it. But Sonos didn't exist when I had the various renovations done when the wiring was added. If I were doing it today, I'd almost certainly just go with some sort of wireless system.
How so? There is already a button to get the flight attendant to come over without having to move yourself, and you are going to talk aloud all the same. In fact with video calling you may disrupt a larger number of people since the flight attendant is also going to talk aloud in a different part of the cabin, creating two disjointed pockets of noise.
Using a call button, the flight attendant has to come over twice - once to find out what you want, and then again to bring you the thing you asked for. Any form of remote communication (video chat, text message, whatever) reduces that to a single interaction.
Fewer trips down the aisle, less time spent leaning over other passengers, etc.
If I were the PM on this project I probably would've used a standard menu of services (get a blanket, refill water bottle) in an app on the IFE display instead, but the principle is sound.