Dear Jennifer, I appreciate your situation and how hard it must be, the only advice I could possibly give you is to have an honest chat with your Dad, it will be difficult but explain to him how important it is to you to have him there and to be able to share this day him, that it wouldn't be the same without him and for the sake of one day in your life to please be on his best behaviour (in the nicest possible way). Tell him how important it is to you to share your wedding day with him and that you want to be able to share many good memories with him and if he gets drunk then that is something you will not have and you can't go back and do it all again. It's hard for me to comment on your situation as everyone's families are different but you may be surprised. To get him involved why don't you give him a special job that he can do for you that won't interfere to much with what others are doing, maybe ask him to come with you to chose bestman/bridesmaids gifts or something. Good Luck Dawn