The 8-year-old twins I want for my flower girl/ring bearer are part of a HUGE family. I want them at my wedding, but, in trying to keep it as small as possible, I don't want their family's 7 other kids. I don't mind kids at my wedding, but I want to keep it down to just the 2 flower girls, ring bearer, and immediate family. How do I do that without sounding rude?