Thanks all for help in advance, and sorry if this is long.
My dad is a nightmare. He is loudest and life of the party but toxic and always negative about me - e.g. tonight at dinner with my fiances parents "Oh NAME would never do that!" "I get so much stick off of NAME!" "NAME has career issues!" Etc, despite none of it being true. He did the same other times they've met and its embaressing when I've spent two years building relationships with his family.
He has anger issues which are the main memory of my childhood. His aggression/violance and the frustration he caused I am sure was a contributing factor to me suffering from really rough teen mental health issues, including a six month stint a mental hospital aged 13. Having gone through that and gone on to having an extremely successful academic and career life without much support means it's really difficult being spoken about like this, particularly when my fiances parents speak about him in such a positive light. It makes me feel like a ten year old who just wants their parents to be proud, and I feel anxious with everything that comes out of his mouth. He also makes lewd sex jokes including references to my fiances mum loving sex and talking about his band writing songs about "making a woman do it when she doesn't want to"?!?!?!.
Our weddings coming up and he keeps going on about his Father of the Bride speech - how funny it will be etc etc. I know it will ruin the day, but we had planned for my fiances father to speak too, plus my fiance and his best man. I hate taking these away from but I don't want to feel as shit as I do now as I no doubt will on my wedding day.
He isnt the type to listen to reason and will refuse to let my mum check his speech beforehand. I want to limit speeches to just my fiance saying a few words, and would really appreciate any advice on how to do this without causing any uproar? He is likely to take Mic and deliver a speech without being asked to anyway, so advice on how to drive the no speeches message home would be appreciated too...also any suggestions for how to talk to him about it and control it rather than just ban it - anyone who has any suggestions at all how to handle would be so appreciated!
P.S. my parents have given us cash towards it and so to him not making a speech will be an insult. I really wanted to elope because of my father, but my fiance wanted a wedding and we accepted help and agreed contracts, and now after tonight I am just dreading being humiliated and made to feel all these old emotions infront of so many friends...