i still want to wear my wedding dress

So me and my fiancé decided to elope, I know some woman just buy a nice dress but i still want a wedding dress which he says is fine but when we have a celebration party itll be just cake, appatezires and music and he doesn't feel thats a formal event that we shouldn't make people dress up when eating all these finger foods and ill look rediculous if its a casual event wearing my dress. If that's the case I almost feel like i want to have a wedding to experience everyone getting to see me in my dress and to be able to get done all up on my special day and him as well