DEAR MISS MANNERS: My oldest child is about to turn 4, and we plan to invite other local children to celebrate. We live in a very small town where the custom seems to be to invite the entire preschool (around 20 kids). After talking with another preschool mom, my husband and I have decided to rent a local event space to host the party. This will allow us to invite all of the kids without worrying about having room.