Do I have my future father in law walk me down the aisle?

Unsure what category to put this under. I don't speak to my family at all and have always said I want to walk down the aisle on my own. I've had pressure from my future mother in law and other extended members of my fiances family that I should have him. Comments like "surely you would have xxxx walk you". He's a lovely man but there's a lot I disagree with his alcoholism and priorities and he has also made comments that he thinks I'll ask him. What can I do? Advice? Please ??