but ya acting like all marriages are da same..people gonna do what they want in their marriages...
I'm not saying you can't do it, I'm just saying you're going to look like an idiot and your guests are going to think you look like an idiot... no matter what they actually say to you. Your wedding is your day and that person can do whatever he/she wants - you can get married in a toga, for all I care... but, you're going to look like an idiot. And, since you will probably never in your life spend more money to be photographed, that might not be the best day to choose to look like an idiot. There are plenty of other ways to interject a personal touch or some originality into your wedding.
...Or, you can do the whole thing informally and wear whatever you want. But, sneakers and suits/tuxes is a bad look.