Turns out my Warner Bros. submission is screwed since they want a mailed submission on top of an internet submission. I mailed it but I did it too late to get a post mark for today.
I'll call around in the next two days, but I'll be really lucky to get a post-marked date for today since from what I understand the dates are all automated for the postal system.
EDIT:
Actually, it may be fine after all! I got this FAQ response from them via automated e-mail:
My materials have all been uploaded online, but my confirmation page and submission agreement won’t be postmarked until Monday. Will I be disqualified?
-As long as your materials are uploaded online before the deadline, your mailed materials can arrive later.
TOTALLY contradicts what was said on my profile page but WHATEVER!