Do you have to show your credit card details to upload Pokemon Ranch on wii?

No, you do not need to show your credit card details to upload Pokémon Ranch on the Wii. The game is typically downloaded through the Wii Shop Channel, which may require a Nintendo Points card or existing balance in your account, but not direct credit card information for the download itself. However, if you need to add funds to your account, that may involve providing credit card details.