Having recently married off my daughter, I offer a few thoughts for you to consider. There are only few populations to consider but I'll only address one: #1 is the bride. It is her day. If the bride (and I mean only the bride) would like for you to wear you SDB, then make sure she knows what it looks like. The gold striping and ribbons are unusual in a predominately civilian audience. Trust me on this. It is distracting. If she is still okay with it, then wear it... just plain old vanilla SDBs (no tux shirt and bow tie, no sword, no medals, no gloves). You job is to blend into the "everybody else" crowd. After the ceremony, standby for a lot of positive attention, but it is still all about ...."the bride". HAVE FUN!!!