Well, apparently my issue was two-fold:
1. My local store wasn't supposed to get any copies (but there are exactly two copies somewhere in the system destined for there -- my preorders, lol).
2. Apparently the entire region doesn't have any yet (according to a manager at one of the larger stores in town) for some reason. Maybe confusion about the dual release dates, I don't know. So we wouldn't be able to have switched pickup locations and gotten it tomorrow (pretty much guaranteed).
However, at least I am getting free (after credit) next-day shipping to my door so at worst I should have it Thursday, which may very well be better than sticking with a store. >.>
If there's anyone else in Central Texas (or however large BB's region is here) who's got a preorder through Best Buy, CALL YOUR STORE AND VERIFY! Everything seems rather weird about this release, store statuses are strange, nobody seems to know when trucks will be showing up with product (should've already happened but sounds like even though there's copies saying "in stock" in stores here, they aren't really in stock). I wouldn't want anyone here to get surprised on/after release day with news that their preorder hasn't come in yet. :(
You would have gotten your pre-order in the morning if you hadn't changed it and decided to get it shipped.
I do not believe Best Buy (at least in my district, which is about 20 stores) is carrying the CE. All these stores show 0 on hand today, but show some listed as "unavailable - (On Order)" anyway. After doing research on the matter most of the day while I was at work, I found out that they should be coming in on UPS in the morning when our daily UPS shipment comes in. So if you pre-ordered, and selected in-store pickup, it should show up at your Best Buy very early in the morning.
Don't bother calling the store, because they probably won't know the answer unless they themselves are waiting on the game (like me). Took me about a solid hour to find this info out myself.