Wii u GameCube adapter
 

I know many people have been having trouble getting the adapter because it's sold out everywhere but I found a website with instructions on how to get one at best buy. I went to best buy today and gave this a try and my adapter will be delivered to me by January 12! Keep in mind that this may not work at every best buy. This method didn't work at the first store I went to but the second store it did work. Give it a try and post your success or not success. Here is the link:

Wii U GameCube adapter available at BestBuy via in-store warehouse order : wiiu

I guess best buy has already got them in stock because they just sent me an email that my adapter shipped so I should have in a couple of days instead of the 12th. :)

It's pretty amazing how much of a difference the GCN controller makes for me in this game.

I managed to get one shipped from Amazon like a week after it came out, but this is good for all those people who got hosed by that.

I just got my adapter in the mail today! So happy and it came way before I was expecting it!!