Pre-wire Ethernet/Cat6 cables as previously suggested: All TV locations, office too. You can make the argument for just going all WiFi, but wired connections are still better. I added them to every room in our house. I plug in my laptop to the Ethernet cable at my desk when I'm home and turn off the WiFi off.
The AppleTV and Roku3 are wired to Ethernet, and 2 more Roku sticks are on WiFi. The wired connections still have a faster response when streaming movies.
I have 3 Eero boxes positioned throughout the house for WiFi distribution, and all 3 are connected by Ethernet cables. The WiFi signal for all other devices is flawless, and it even reaches to the garage and patio too.
Make sure you get a gigabit network switch to stash in the closet where all of those Ethernet cables terminate; and you'll need a power outlet in that closet to power the network switch.
Electrical: I really like the combo dual wall outlets that also have 2 USB cable connections. Install one or two on the kitchen island or counter to easily connect a phone/tablet charger cable without the wallwart. Also maybe install them near the bedside.
Finally, put a small cheap TV in the master bathroom. You'll thank me later.