Wow, oh wow! I just got off the phone with FI (he's helping his dad move from FL to PA) and he told me that all 3 of his sisters plan to attend the wedding.
A little background ... one of the three sisters was not shy in telling FI about her misgivings when he announced our engagement. I assumed (shame on me) her initial disapproval meant we'd not see her at the festivities. After all, this is a woman who has not spoken with one of her sisters for over 7 or 8 years and, until her father's wife passed away a couple of months ago, had ongoing/unsettled drama with her father. Mind you, she has always been polite and nice to me, but was very vocal with FI about her doubts b/c he's marrying for the 3rd time. Who knows? Really, who knows?
It just goes to show you. Some people can actually get over stuff. And move on. Amazing. Simply amazing!