This year we're only able to invite about a dozen of ds friends around after school for birthday cake and games. We were more flush last year and hired village hall, entertainer etc. and loads of children. Because of small numbers is it unreasonable to ask one of our friends' children to come? He isn't on ds's list. He hasn't fallen out with him and enjoyed a recent play date together, but is just not his first choice. Am I being an interfering parent or someone who wants to reciprocate as ds was invited to this child's party recently.