That's why Leicas were the wedding photographer's prime cameras for decades. They made an incredibly modest little amount of noise when exposing. You'd have to keep your ear next to it to hear it. Perfect for church weddings and services. If you knew your way around available light photography. Real craftsmen, those guys. In no small amount aided by their Leica's impressive precision and the fabulous central shutter mechanism.
Pricey, too.
Pricey, too.