My FI has lived in same building for seven years. I moved in with him last summer; our landlords are a nice older couple who live upstairs so we see quite a bit of them. FI has promised the woman who cleans for us an invite (she's been working for him seven years as well), which is fine. I don't want to slight anyone, which is why I'm asking about the landlords. We're having a small wedding of about 50, so I don't want anyone to feel out of place either. Thoughts? Thank you!