If your invitation says “and Guest,” then yes, if not, we would prefer if it was just you.
Formal. We suggest a jacket and tie or a traditional suit. An elegant dress or a nice pantsuit would also be appropriate. You can wear a tuxedo or a floor-length evening gown if you want, but a dark suit with dress pants and nice loafers would be acceptable too. Similarly, a midi or knee-length cocktail dress would also be appropriate instead of a floor-length gown.
We love your kids—we really do. But we want our wedding to be your night off!