RV Video Streaming
I've been a Mac fanboy sine 1986 and own several AppleTV devices now. But I've become convinced that Amazon's FireTV Stick is the way to go. At $40 each you can buy 3 FireTV Sticks for less than the current cost of a 4th gen Apple TV. And Apple lacks one big thing: Amazon Prime Video. Even if you don't have any other video streaming service Prime Video offers so much these days that you can justify to the cost of a Prime membership on this basis alone. Add Prime Music and it's a no brainer.
Plus the Stick is so small, supports 4K video for the future and offers Alexa, how can you go wrong. I have one plugged into the HDMI cable in the cabinet over the kitchen counter on my Vegas, using an HDMI splitter. The remote is RF so the cabinet door can stay closed when we're watching video.
For streaming I have a Verizon 7730L MiFi with unlimited data plan (which isn't really unlimited) that supports 15 connected users. That way all of our phones, tablets, Kindles and everything else work, even when we're on the move.
For the bedroom, I have an AppleTV that I already owned hooked up and if I want to watch Prime Video I use the Amazon Prime Video iOS app and use AirPlay to broadcast from my iPad to the AppleTV.
I also run the PLEX server on my MacBook Air to store my music and video library. There are PLEX apps for most tablets now so that you can use the hookups described earlier to get music and video to the RVs various TV sets. And any good BlueTooth battery powered speaker. I like Bose's SoundLink series.