hey there and welcome
ok look under my avatar at the bottom , that 16 digit number is my 'wii console number'
You need to register other wii owners numbers in your address bk so that you can communicate with them .
When your mii's are set on mingle , they will sometimes appear on your wii friends mii parade and when travel is on you allow others into yours .
you can access your wii number in settings , you can add me if you like but make sure you give me your wii number or it wont work !