Despite their advertisement to the contrary, they are NOT open to the public. Sure the public can get a limited access pass to walk around, but the Las Vegas Market staff did not bother to talk to the furniture companies they host before making their dishonest proclamation.
Almost none of the vendors will sell to the public, and that is if you are lucky enough to find someone manning the showroom. The few that do sell to the public do so through an in-house "designer" which means they'll tack on an 18% mark-up on whatever you buy.
So, unless you are in the industry or have a friend who is, don't waste your time.