K..
Well, what's more important? Keeping a budget or keeping score? You can't worry about everyone else. This is why I plan to do the same thing for DD's parties because we can't afford to entertain a whole classroom worth of kids. As much as we'd like to include everyone, it's just not realistic, and not to be cliche, but disappointment is a part of life that kids need to learn how to deal with. They can't be sheltered forever.