Well since the Americas covers pretty much the US, Canada, and Mexico, and there will supposedly be close to 1 million units for all of the Americas, I'd say about 200,000 give or take. Now keep in mind that's not an official number as Nintendo would never narrow it down THAT much. But I'd bet around 700,000 will hit the US, 200,000 will hit Canada, and somewhere in the neighborhood of 100,000 or less units to hit Mexico on launch day. My advice is that if you can preorder, then do so. If not, get to the store early on launch day and you should be okay.