Setting up an internet connection via wireless (WiFi) will allow you to access certain online features like GameChat and GameShare, purchase games on the Nintendo eShop, and see what your friends are ...
To redeem a game code on Nintendo Switch 2, you’ll need the 16-character download code included with your purchase.
Once the eShop loads, look for the Redeem Code option in the main menu. On the Switch 2, this appears in the left navigation panel alongside the store’s standard browsing categories. Select Redeem ...