My MOH just gave me the greatest idea, so I wanted to share it here. Instead of making a name card for every guest so they know where to sit, just put their names and table numbers on a list, and give copies of the list to your ushers (or someone else assigned to the job). Have them stand by the door as guests arrive at your reception, ask their names, and tell them their table number. I thought it sounded like a really nice, personal touch, making it seem more like "Welcome, we've been expecting you!" Plus, you save on paper because you don't have to print all the place cards!