I think its best you call Apple on this one. My understanding is that unopened, build to order MBP's are also returnable within 14 days for a full refund. People report receiving build to order options on computers they've ordered from the refurbished section of the Apple store. How could that be if Apple didn't take returns from build to order customers?
In short, don't open your computer when you get it and call Apple.
In short, don't open your computer when you get it and call Apple.