Does a specially chosen fragrance for the bride and groom create potent memories? You bet.
Do peripheral players in the ceremony play a role with their scent of choice? Of course they do. Imagine if your mother gassed the room with a heavy hitter that distracted from the proceedings. Or if your best man chose to wear something ultra challenging and while leaning over to give the rings emitted the ...shall we say "surgical ambience" of Secretions Magnifiques, for instance? (That'd be a cruel prank to carry out).
I have compiled a top wedding perfumes for brides and bridesmaids (or guests) on this slideshow and another one on best wedding colognes for the groom (and possibly the best man, just make sure they don't "clash") on that slideshow.
Enjoy and may your new life together be paved with happiness!