I'm not sure what the ettiquete rule is for this but I'm wondering if I have to give all my guests who are single a +1. For instance, if I'm inviting a family of 3, a mom, a dad and a son, do I have to give the son a guest?
Likewise, if I want to invite a group of friends I work with and want to sit them all in one table, do I have to give each of them a guest as well?