Activating Disney Plus on Apple TV with a login code is simple. First, download and install the Disney Plus app from the App Store. Open the app and select "Log In." A unique login code will appear on your screen. Using a web browser on your phone or computer, navigate to disneyplus.com/begin code and enter the code displayed on your Apple TV. Log in with your Disney Plus credentials if prompted. Once the code is verified, the app on your Apple TV will automatically refresh, granting you access to your favorite Disney Plus content. Enjoy streaming!