3DS and Wii U shops closing down

[A Black Falcon]

Warning!  I reread Nintendo's announcement.  For clarification, the store will prevent purchases outright of any sort in a year's time.  However, the real deadline is four months from now.  That's when you can't use a credit card any more.  Past that, you can still redeem eshop cards, like you can get off Amazon, until August.  The deadline next year is for using your remaining eshop balance.  Now, I never had balance of any sort accrued on my 3DS because I never needed to.  Further, those eshop cards are bound to jump up in price past that date.  Effectively, we have four months.

It is true that they are turning off credit card support in the Wii U / 3DS eshops in August, but I am almost certain that if your Wii U/3DS and Switch accounts are linked, then you will still be able to spend money on the 3DS and Wii U which you add on the Switch.  I linked my accounts quite some time ago and so I'm not too worried about this.  I mean, it is convenient to be able to add money on the Wii U and 3DS themselves, but there is a totally fine workaround.  If your accounts are linked all three systems will report the same balance, and I see no reason to think that that will change.

If I were you, I'd make the assumption that will be broken in four months.  It's the safer bet.

"Users who link their Nintendo Network ID wallet (used with Wii U and the Nintendo 3DS family of systems) with their Nintendo Account wallet (used with the Nintendo Switch family of systems) can use the shared balance to purchase content on any of these systems until late March 2023. After that, the balance can only be used to purchase content for the Nintendo Switch family of systems."
https://en-americas-support.nintendo.com...a_id/57847