Also, what is the appropriate way to let your guest know they have a +1? A few coworkers and friends are invited and we want to give them a +1, but don't want to assume who they would want to bring. I would address the invite to " Mr. John Smith" or whoever, but how do I let them know we have left room for them to bring a +1? And what is a polite way to ask who they're bringing so we can fill out the table settings with their name instead of "Guest"?