get an unwanted opinion from their families (like on the venue, the bridesmaid dresses, the flowers, etc) they said "We charge $100 to listen to opinions". So, you may want to adopt that rule if your families start to freak out and become overbearing!
This is a great idea...I am tempted to e-mail everyone and tell them thus.
I am also getting married in 6 months and I feel a little insane. But we are planning a wedding in Hawaii and we are WA.