Also, in response to Terry's post.
CCE has some facilities that are older, or are dedicated to making just one package. That's pretty much the way it is in the Mid-Atlantic. Baltimore is a can facility. They make Fridge Packs, 6 packs, and 24 packs. They used to make 4 packs and 18 packs as well (and probably 20 packs, too).
Alexandria, Virginia is a bottle facility. They only make two liters and one liters.
Silver Spring (an old sales center) just makes 20oz and bag in box. I suspect that Alexandria ran them before this facility was remodeled, but I'm not sure.
Richmond is the newest facility, and the most versitile. They run every package, but mostly for the Virginia and the one NC sales center. However, when demand is too high for the other plants, we will get 12 packs, or 24 packs, or 2 liters from them (rarely do we get their 20oz, though). Funny thing is, all the Mello Yello FPs I've seen in our area have come from there. They recently added on a Dasani line, which produces 20oz, 6pk 16.9oz, and 12pk 16.9oz. This facility also produces 16.9oz for the whole Mid-Atlantic Division, plus they also sell some to Central and other indies.
Even with all that, sometimes things happen.. too much demand, not enough of a brand, or maybe they've ran out of concentrate, labels, cans, etc.. So they source from Twinsburg... Twinsburg makes everything including Dasani.
A lot of the indies never had can lines, they bought from other bottlers, or places like Mid-Atlantic Canners.