Polterabend
"Polterabend is a German wedding custom in which, on the night before the wedding, the guests break porcelain to bring luck to the couple's marriage. (From Wikipedia) Sorry, but I don't have any reason to smash porcelain. Plus, traditionally on Polterabend the groom celebrates the last night in which he is “free” and unmarried. That's just old sexist thinking."
Obligatory Photos
"Well, I have been in charge of the stag, being his best man and the the other members of the group being a little wlld, it was my job to keep him safe.
I have dragged up and gone on a Hen night, as we were close friends and she wanted me there, so I made it an event.
I have been in charge of the music on the wedding reception night, in my role as DJ. I have made the wedding cake and catered the wedding breakfast, in my role as a chef.
But the one thing I will not partake in is the obligatory photos."
Why? Because they don't want to follow every standard traditional thing?
If someone tells me that they don't understand some tradition a take them as an illiterate person. You don't need to follow, but understand? Just research it.
You can choose what you want.