To those who were hassling me....
Half of them have been written and sent out, the other half are beign finished on Friday. We realised that we'd printed a standard "Thanks for the pleasure of your company" thing (and then wrote personal bits underneath ), but a pile of them were for people who didn't actually make it to the wedding, so we've had to do a new centre for those.
It may have taken forever to get them sent out (I'm blaming morning sickness for a lot of it), but they look great