If your invitation says "and guest", or if one of us texts you saying "Hey messed up your envelope, feel free to bring a guest" then yes! If not, we'd prefer it if it were just you.
Yes! Guys, wear a button up and dark jeans or slacks. Ladies, same or a nice dress. July is hot, so we get it, but if you show up in shorts and a tank top we'll hide you behind some plants.