A few q's answered..
Fujicolor handles Wal*Mart's outprocesssing in the US. They do NOT follow Wal*Mart's 'unsuitable prints' policy.
If you want to make sure it gets sent out, drop it in the drop box specifically for "3 day" service. If you do not know where that drop box is, ask. Most of the associates can at least tell you that. In my experience, (worked at a wm1hr lab 2004-07) the service is very reliable, although mistakes do occur as with any process. IMO the quality is pretty good too.
They will process just about anything via sendout that can be processed reliably in modern equipment (*20 formats in color/e6/b+w, 126 and 110, 135, supposedly movie, interneg, slide copying, etc etc. They have a flipbook stick to the drop box explaining everything they can do)
Talk all you want about how saving a buck here and there will destroy the planet, but that buck is the difference between me being able to budget processing of one roll or five. And why buy five rolls if I can only afford to process one? Woops, there go film sales.