My wife and I both teach public school. Recently, we received wedding invitations from two of our former students who were both friends with our entire family. Both invitations were addressed to Mr and Mrs John Doe and neither one mentioned our daughters. One of my daughters is away at college; the other is still in high school. The rsvp asks the number attending. Do we say 4 and include our daughters or 2 and not take them (both weddings are out of town).