Carol - Hannah loves this bouquet. It has the amnesia roses, quicksand, and I guess white or off white. Since her dress is white, I would probably go with white. But she would also love dusty miller around the perimeter if it doesnt get too wimpy.
If you are inviting kids. I like these ideas: -A kid drink for the toast (like cookies and milk) -Activity sheets/placemats/crayons -Legos/playdoh -Hire "babysitter" like a 13 yr old cousin -Kids open candy/snack bar