Well...average person I don't know....personally, I can tell without a doubt, but I'm an avid macro shooter and macro is almost all that I do. What I would try if I was you....is extension tubes. Do you have flashes? SB-600 or SB-800? What bodies do you use...are they bodies with CLS/Commander mode? If so, I would pick up a set of Kenko extension tubes and stack them up on the 50mm or the 85mm. It will get you to at least 1:1 if not farther and be more magnification (closer) than you'll ever need for wedding stuff. The plus is that you will have the same exact quality as you have currently with the 50mm and 85mm and it will only cost you 100 bucks or so. Look on the used market for the kenko tubes...just make sure they have the electircal contacts for metering.
This is what you need.
Kenko Auto Extension Tube Set DG for Nikon Lens AEXTUBEDGN - B&H
I picked up a set used a few months back for around $120. There is no glass so there is no drop in quality and they let you focus much closer.
I'd grab that, throw it on f/11 - f/13, 1/200th shutter, TTL on the flash off camera from an angle. Will give you nice dramatic light, decent DOF and very close focusing with the 50/85.