When OH & I booked our wedding we decided that we wouldn't be inviting any children unless they're part off the brides / grooms party. We're having our own son as page boy, OH's sister (7 years) as a flower girl and my only nephew as an usher. We worked out that if we were having all children there would be twice as many children as there would be adults. There was no way we could afford to cover the cost but also decided that most children get bored sitting listening to speeches etc. We've had to be really strict - and treat all under 18's as 'children'.......so no under 18's apart from the 3. Whats everyone else planning on doing? We've had a couple of comments but were just sticking to our guns..........we think a few family members will say they can't come as they've no childcare thinking that we might just say 'oh bring the kids' but we're not!!