Formal receptions really need place cards holders. It doesn’t matter how detailed your seating chart is, someone is always going to get lost or decide they want to sit at the ‘best’ table. Not that place card holders can’t be switched of course but it is a strong hint to sit where told!
This holder is ideal as it is also a wine stopper so your guests can use it at the table before taking it home. $1.59 each at FavorWarehouse.com