So my father just decided that he will walk me down the aisle. That being said, when I asked him if he wanted me to let our tux rental place know that there is one more person, he said he didn't want a tux and would wear the suit he has. I am cool with this but aesthetically and traditionally, do the father's have to wear anything similar to each other?
Also, FFIL is renting the same style tux as the GM and my gandpas (who doesn't own anything other than farm overalls). Is this uncouth?