The deadline is actually the 15th...on the website, click on 2013 convention and then Print Competition for all the nitty-gritty details. It's a zip file that you download then extract.
I have this print case (tho it's showing out of stock you can try searching for it elsewhere):
http://www.adorama.com/FIP5016202.html
Don't stress too much if you can't get a case. We will accept your prints if they're in a box (the boxes that your prints ship in from the lab are ideal).