So here's the scenario: I e-mailed 3 friends suggesting dinner and a show since none of us had met up in a while. I mentioned several dates a good 5 weeks in advance so as to accommodate everyone. We all said yes, the date was settled and I am organizing by buying the tickets and selecting a list of restaurants nearby.
It's 3 weeks later and Friend 1 contacted me asking if she could invite a friend. Although they are friends, the rest of us only know this person as an acquaintance.
Then earlier this week, Friend 2 e-mailed to say she had invited another person. She felt obliged to because this person heard about our upcoming dinner+show and said to Friend 2 that she also wanted to see the show. Again, rest of us only know this person as an acquaintance.
I realize I am not inviting my friends to my house for a meal but I do feel a little bit the hostess since I originally suggested the get together and am organizing everything. I don't want to seem unfriendly but do I have any options so I can keep this dinner+show to the original 4 of us as planned? We don't get together too often and it was hard enough to pick a date we could all agree on. Is it rude to ask Friend 1 not to invite her friend? What about the person Friend 2 already invited?