The problem is your Wii, not the disc. It's probably a dirty lens.
More info here: http://www.nintendo.com/consumer/sys...s/gameSSBB.jsp
We played Super Smash Bros. Brawl on our Wii the next day a friend borrowed game. It played on his wii also. When we brought it back to our wii we get message can not read disk message. we took it put it on another system and it worked. all our other games work on our system. this is the second smash brothers brawl we have bought the same thing happened to the first one as well. What can i do? what could problem be?
Like Skippy said, yes, I agree it is the lens. You might wanna get a lens cleaning kit then.
I'll be around,
P.S.- So you're bringing CoD and snacks, right?