Mom has has totally different ideas then me....

I'm my mother's only girl (she also has 6 boys) so she wants to help plan the wedding... Which I'm excited about but we have two different thoughts on things... I have 2 (10 & 5) children and my fiance' has 2 (16 & 13) children... Which we are including on our invitations and during the ceromony and they are even standing up in the wedding and hleping plan it... She is so determine that the wedding is to be about just me and him... How do i tell her that this is our wedding and we want to include our children without remembering her old fashion values???? Any ideas????