I belive that the eticate I have read says you can invite people to the reception but not the wedding, but if they are invited to the wedding you also need to invite them to the reception. The reason being "it makes them feel like they are important enough to go to the wedding but not enough to go to the party." I would just think about it, because as an adult I would be hurt if someone invited me to the wedding but not the reception. As far as kids go I would follow the same rule. However if they are in the wedding I would have them at the reception too.