I am getting married in November and we just recently sent out our invitations. We are under a strick budget and therefore can not afford to have more than 100 people at our wedding. Because of this we could not allow anyone who is not married, engaged, or in a long term relationship bring a guest. We also decided that we did not want any children at our wedding except the ones in the wedding. My problem is that I have received several RSVPs with people saying they are bring a guest or their children when we did not alot for this. How can I politely tell them that they can't bring a guest or their children to our wedding?