People should beware, there's lots of reports of Gamestops telling people they need to preorder MH3 to get the FREE demo. This isn't true, and if it happens to you insist on speaking to a manager. If that doesn't work, tell them you want their district manager's number and then FOLLOW THROUGH and report the store/manager that tried to fuck you over.
The sooner Gamestop goes bankrupt, the better imo. I dunno why Capcom could've have done the demo disc at all retailers...