I remember when I bought a New 3DS model, I had to transfer all of my data off of my old 3DS, and wasn't able to maintain two devices at once. Has this been remedied with the Switch?
I will probably be buying a second Switch for my family this year, and I was hoping this would be a good place to ask how the family account works and if I will be able to download my titles and sign in to both Switch units with the same NNID.
1. Purchase games on secondary accounts, not your primary accounts.
2. Lock your secondary accounts to your primary Switch.
3. Put your secondary purchase accounts on your additional Switch
4. Play your secondary account from your secondary Switch, but play the same games on your primary account from your primary Switch.
Basically, you can play games on ANY account that is on the same switch as your secondary account (the one you purchase things with), but if you put your secondary account on other Switches, you have to use that one to play, and you can only access your secondary account from one Switch at a time.
Switch 1 has two accounts linked to it: Account 1 and Account 2
Account 2 owns Stardew Valley
Because Account 2 is linked to Switch and owns Stardew Valley, Account 1 on Switch 1 can also play Stardew Valley
If Account 2 is loaded on Switch 2 (but not linked to it) then a player can ALSO play Stardew Valley from Account 2 WHILE Switch 1 plays Stardew Valley from Account 1. This allows multiplayer between 2 players with only 1 purchase, or multiplayer with 4 players between 2 purchases.
But you can't have Stardew Valley playing from Account 2 on more than one Switch.
I hope this helps. Single player games are much easier because you can share Account 2 across multiple Switches, and as long as only 1 person plays it from Account 2 at a time, it will be fine. So if you (like me) have 4 Switches in your household (Your wife and two of your kids), then they can all play Xenoblade Chronicles 2 or Breath of the Wild on your share purchase account (Account 2) as long as only one of them is playing it at a time (and you can always play it from Account 1 on the main Switch/Switch 1).