A: First, let's get the types of cards straight. Place cards mark each seat at the bride's and parents' tables, but are optional elsewhere, except at very formal weddings. If you want to designate each seat, every guest will need his own place card, whether he's single or not. Table cards (also called escort cards) direct people to their tables; solo guests should all get their own, but a couple can share one.
Q: I'm about to write out the place cards. Does each unmarried guest get his own? Does the same rule apply to table cards?
