So, if you say to me, "Please join us for dinner at The Nice Restaurant next week. We're getting a big group together to celebrate my birthday! My whole family and lots of my friends are coming. My cousin and his wife will also be there."
What I hear, is this: "We are gathering together a large group of people who share no common bond other than their single-minded devotion to one person. We are going to overtake a restaurant and draw a great amount of attention to ourselves simply by sheer force of numbers."
Something to keep in mind.