I’ve only used YouTube, Netflix, and Amazon Video. All three work great.
I’ve had bad experiences with other services like DAZN because their implementation of HLS is faulty. But, IMO, that’s not AppleTV to blame (other than not supporting, the competitor standard MPEG-DASH): when their HLS transcoding is misbehaving, it just doesn’t work on any Apple product (iPad/iPhone DAZN apps, DAZN’s website on Safari, etc.). Those days, I end up airplaying the content from my MacBook, watching it on Chrome. But again, that’s a technical issue on DAZN’s end.
TLDR, if the services you’re interested in work on your Apple device, they should be fine on Apple TV. And I still haven’t found any streaming service without an app in Apple TV.
Add an automation for Alexa to scream all over the house when left on outside the schedule. It’ll reeducate everyone to turn the lights off when done 😉
Now seriously: you could use another automation to turn it off after some time. Or improve it with presence/motion sensors to turn it off when no-one’s around.
Finally, if you really want to let her control the lights, I guess you could expose those to a “new virtual” house and invite her to that house. I’m not sure how it could be done in Alexa, though.