Well, I'll just leave this here in case it helps someone in getting a system at launch that did not pre-order:
We took pre-orders at Wal-Mart, but sold through those within a couple days. We initially only sold about 40 pre-orders, but started receiving our consoles and are showing 60 in-stock, meaning there are 20 that will be released to gen pub at midnight of launch.
With that being said, there will be a line in our store by 6pm that day for those, so if you want one and did not pre-order, call your local store to see if they received extras like we did, and make plans to go early to wait for a few hours to get one.
I will warn you though, the resellers are already using the 3rd party sites to track stock and have already been calling, so I would expect families of flippers (remember, 1 per "customer" and customers can be anyone <regardless of who pays>, so we've have little kids, brothers, sisters, uncles, and people paid to wait in line and been given the opportunity to buy one. It sucks for those that actually want to play one, but for a flipper to pay kids $20-50 to wait in line for a few hours is nothing, when he can resell the units making well over $100 profit per unit. Yeah, complete $hitty business...
Grab you 3DS, Vita, Tablet, and portable charges and plan ahead.
Either way, it looking like there will be units to sell to gen pub from what I've been hearing from other stores.