Including Stepdad, how to tell my Dad

I think you just need to approach him and tell him why you feel it is important to you for these things to happen. If they are on decent terms than it shouldn't be a problem and even if it is, too bad! since it is your wedding.

I have a similar situation. I told my dad that I wanted he, my mom and my stepdad to walk me down the aisle. Then I asked if he would prefer walking me down the aisle half way down and my mom and stepdad walk me the rest of the way, or if he wants to be waiting for me halfway down the aisle and he walks me to my fiance? This way I'm getting what I want and I'm allowing him to choose which he prefers of those 2 options. I have the same issue with the "date" situation but I put my foot down with that one. I said if it's no one serious and just "company" then she is NOT sitting at the same table as my mother!!!!!! She can sit with his friends and he can. Join her after dinner or he can choose not to sit at the parents table. If it's a friend I know and like , where I don't feel there would be any disrespect to my mom then I told him sitting at the parents table is fine. I might be old school, but I don't care.

I kinda went thru the same thing. You're dad should understand. It's your day and if that what you want to do he should respect that.

So I had the same issue. I had been trying to work up the courage for months to try and tell my dad about how I also wanted my step-dad to walk me down the aisle as well. I tried telling him in person with other people around, I tried to tell him during phone calls and when we had one on one time but just couldn't, because I was worried about his reaction as my dad and step-dad don't care for each other at all. I ended up telling my dad via text why it is important to me to have both him and my step-dad walk me down the aisle. His response made me cry and he was very upset and he almost considered not coming to my wedding just to hurt me and he wrote a letter to me and read it to me on the phone explaining how he is deeply hurt etc. I ended up not even telling him I was doing a dance with each of them because I had cried enough. So my dad came and he accepted it and they both walked me down, they both had a dance with me at the reception and after all of that, my dad told me how wonderful my wedding was and he was proud of me for sticking to doing things how I wanted them. I know this isn't super helpful, but my advice would be to just be honest and explain why it is important to you.