Number of network sockets; how to plan Wi-Fi in the new building?

It's not that far-fetched if, for example, you want to set up a streaming speaker in the toilet/bathroom and cannot or do not want to operate it via Wi-Fi.

Really, your toilet needs LAN too?

In the bathroom, the streaming speaker runs over Wi-Fi for us. Only user is me
In the guest bathroom, it also ran over Wi-Fi. No user -> I have now banished it to the hobby cellar.

The kids' devices as well, by the way. (of course, one can argue about stationary/non-stationary here).
At first, I also wanted to run everything over Wi-Fi until my brother-in-law convinced me to install double sockets in the 4 bedrooms and downstairs in the living room.

End of the story... everything runs on Wi-Fi except the TV in the living room and the two APs (ground floor/upper floor)

It's not so far-fetched if, for example, you want to set up a streaming speaker in the toilet / bathroom and cannot / do not want to operate it via WLAN.

but everything that is location-bound - there is no reason why that shouldn't be permanently fixed with a plug.

spontaneously, a smart mirror with a raspberryPI comes to mind...