Zero feedback here. Not even a hint... I use a Sanken Mic and a little EQing goes a long way! Also, I place the mic behind fabric (tie, shirt, jacket) which does wonders for cutting low rumble or severe wind. Learned that trick from being on set in the film industry.
I proudly sell that I have the cleanest ceremony audio compared to my competition and it's invisible-- you can't even see the lapel b.c it's hidden.