Yes. While we love your children with all of our hearts, this will be an adult only event. We appreciate you making arrangements ahead of time and leaving the kids at home so you can celebrate with us!
If your invitation says “and Guest,” then yes, if not, we would prefer if it was just you.
Formal attire, please. But we want you to feel comfortable, so if those shoes are too high or that top button is too tight, let it all hang loose.