You get 3 months free first and then you get additional 9 months free after 3 months!
If we hit that bull's eye, the rest of the dominoes will fall like a house of cards. Checkmate.
I'll have to look into what Nintendo Online actually is.
I think I had a subscription to XBox Live Gold back in the 360 days but other than that I've been pretty much out on paying for console online stuff so I don't really even know what they offer (outside of some basic stuff like online play in some cases, PS+ giving free games each month, etc.).
It lets you do game saves on the cloud... as well as allowing you to play original NES games!
Any play most switch games online.