Depending on the attitude of the area you may not face anything in person. We live in a small rural area and no one has said anything to our faces. Yes there are tons of rumors floating among both families, but no one will say anything to our faces. We did have a few upfront immediately after coming out from Shannon's immediate family, but the general public not really.
Lots of "concerned" parents call her principal and ask for her to be removed, but he just blew them off because they wouldn't give their names. He told her the next day that he didn't care because it was a private matter with no impact on her professional work so it just didn't matter.
My side of the family wasn't speaking to me BEFORE I came out because I broke free of their control. They pretend I don't even exist for the most part. The ones that are sympathetic do still ask how things are going in private, but in public they have to present a unified front or be exiled too. Because most of my neighbors are my family members and they pretend I don't exist, we've not had to deal with them directly either.
But yes Karen and Stephe are right, if they do then just give them a cold stare full of contempt and walk away. We've found that to work best, especially with my family since they want to see me hurting because they won't speak to me.