A:AnswerI believe it depends on the game you play. So for example, a game called mario party allows many people to play, definetly more than 4. Games like mariokart amd smash allow this too!
A:AnswerMake sure you’re using the pamphlet from the original product. If you have to, take the back cover off and it will have a barcode you can scan under it for registration.
A:AnswerThis version is just the console itself. There are different versions which come as a package. (IE: Legend of Zelda tears of kingdom package)
There are a few free apps you can download from Nintendo E Store. But you should know a Nintendo online account could really unlock the potential of the device.