When photographing men in formal surroundings tell them what to do with their hands and no I don’t just mean keep them to themselves!
Most guys can deal reasonably well with how to act or behave in a formal setting such as a wedding, party or even corporate event.
Of course there will always be exceptions and that’s why wedding planners have “that table” way up the back of the room!
What most men have great difficulty with is posing formally for photographs within those types of settings.
As the photographer in situations such as those you hardly have time to spend hours working with them to get a pose that conveys some sort of natural ease.
In the absence of clear directions a sort of nervous hysteria will begin to set in resulting in them either striking some kind of silly pose or worse still, reverting to Neanderthal behavior and scratching their nether regions.
The quickest way to get good shots is to at least tell them where you want them to place their hands.
Generally speaking if you can get their hands handled for them, the rest will fall into place.