Mythanatos:
Unless the kids are hammering the router with Netflix.
I disagree.
Again, unless you have a fairly slow internet connection to begin with, it shouldn't be an issue. For the most part, I've never had any laggy meter issues with my iPhone or iPad Air or iPad Pro. And we've had multiple devices running at the same time, with some streaming video.
As an aside, until recently, we only had an 18 Mbps line, which is slow by today's standards.