When I sent out wedding invitations oh so many moons ago, I did send an invitation to my old T, my old pdoc, and the T that both my husband and I had seen when we didn't even know each other at the time (small world, particularly since that was in Houston). We didn't expect them to actually attend. Heck, we didn't really even expect any kind of response, but we DID want to share that we were happy, we'd found each other, and we were moving into a new period in our lives. The invitation was really more of an announcement in that sense than an actual invitation in our minds. We actually received really nice response letters from all three simply congratulating us on our upcoming marriage and letting us know how nice it was to hear the news. That was really more than we expected; we simply wanted to share our news with them.