The TRU idea is a very good deal, and yes, you should be able to get a copy at Wal-Mart, guaranteed. As for Gamestop, I'd say the odds are more against it than for it.
[quote name='dimeadz']You will probably get the "Did you preorder? Cause if you didn't we don't have any extra for sale" bit at the Gamestop.[/QUOTE]
My old GS used to say the same shit. It was dumb because in 9 out of 10 cases, they'd just let you "pre-order" right there on the spot and get the game. So much for them "only having enough for pre-orders".
It's your fault for not preordering. Had you simply given Gamestop an interest free loan for an unspecified period of time, you would have ensured your ability to buy a publicly available retail product on it's release date.