Did/has anyone used some kind of system to keep track of RSVPs? I've heard of people putting a little number on the back of the response card that corresponds with a household (in case a guest forgets to fill in his name).
Is this a good idea or would it be impolite since the guests might think the numbers had something to do with ranking...? I don't see how else you could make sure you know who nameless RSVPs are from.
Re: Response cards question
If you're super concerned, you can use a blacklight/invisible ink pen.