My father and I have always had a difficult relationship and there have been times when I considered cutting off contact but have always tried to make it work for my mom's sake. He offered to pay for my wedding and while he was very supportive at first, as the big day approaches he has heaped on the demands and is starting to be very unreasonable.
Most recently, he has threatened to book a Catholic priest to preform the ceremony (this may be impossible since we're not getting married in the church) but I feel like he's doing this just to get out of paying for the officiant. While I was raised Catholic, my family stopped going to church when I was young and half my family are very vocal about not believing in God. My FI is Protestant and has strong feelings about the Catholic Church. When he brought it up he immediately said "And if your future in-laws don't like it, they can pay for a pastor themselves!" I feel he's just playing chicken, trying to force them to pay for this part of the wedding by being stubborn about something he knows no one wants.
He has been badmouthing my future in-laws quite a bit lately and I know he wants them to step up and offer to contribute. He threw a fit because he feels they aren't throwing an elaborate enough rehearsal dinner and since then has refused to pay for any other wedding related things. How do we ask my FI's parents to make additional contributions without implying they are cheap or letting on to the fact that my dad is being difficult?