I can't say for sure, but I'd be willing to bet there'll be plenty of accessories to go around. Remember last year when the 360 was the thing to have? I do. You couldn't find one in a store to save your life, but you could go pretty much anywhere and get an extra controller. I wouldn't worry too much about it, but if you don't want to be left without an extra I'd go ahead and get it when you pick up your wii.