I think it is so unfortunate that people act this way. We are going through something similar, and we are planning our DW less than two hours from where my fiance's family lives (in NY, we live in GA). However, we got the whole "selfish" thing and threats of his parents not coming because they don't like when and where we are having it.
I think AishaB is right. Your dad knows how poorly he has treated you in the past, and he is just letting it all out as anger because he doesn't want to deal with it.
If I were you, I just wouldn't mention it anymore to your dad. He knows when it is, and if he decides to come, he comes. If not, I know you will have an awesome day with everyone that does join you.