My father is an alcoholic and has been my entire life. We don't have a good relationship, in fact we barely talk. He and my mother are paying for the wedding. My Opa means a lot to me and recently I asked him to walk me down the aisle with my father as a compromise, but he said he would feel too awkward and ultimately turned me down. He suggested I have both parents walk me down instead but my mother is verbally abusive and I really don't want that either. Any suggestions would be greatly appreciated.