Marriage and...family?

So...my fiancé and i just got engaged. His parents are divorced so obviously they have very separate ideas of how marriage is supposed to be. his mom, along with my parents are super excited about the engagement. however, his dad has been giving my fiancé a lot of crap about it saying that he doesn't think that we are right for each other and that we don't know what it takes to be married, among other less important things. my question is, how do we handle this? i have a really hard time not including him, which is what my fiancé wants to do, because i am really huge on family, however, because he's not supportive of the marriage, my fiancé wants him to have nothing to do with this. what do i do??