[PhoenixAzul]

if you can swing it...

find a way to get all the girls out of the house. Maybe invite them all out to dinner or a barbaque or just to come over to your house, but , don't make any mention of your mixer. While they're out of their house, have a couple of your guys go over to their house and decorate the outside of their house and put their flower on their porch or whatever, and if you can swing it, maybe spell out your intent in candles (Mixer? would be cool). If you can't do that, a sign will work. If you had them at your house, offer to escort the girls back to their house, so you're there to see their reaction (and help clean up)