Dani

My colors are purple and silver. My groom and his men are wearing black tuxes. Brides maids are in black dresses. My mother wants to wear a purple colored dress (does not match exactly to my colors)...

Any suggestions on how to *politely and tactfully* ask guests to leave venue so room can be flipped from ceremony to reception? We are using an Art Center in town and they can hold 75 ppl for ceremony...