Was at the wedding of my sister's best friend yesterday. The bride sang "Total Eclipse Of The Heart", as she was walking down the aisle. She's a lovely woman but christ she cannot sing (though I think it would have been cringe even if she was Adele). The husband didn't know she was going to sing and seemed very taken aback by her it.
There was also a wedding a few years ago where the couple had their 4 year old stand next to the vicar and try and read out their vows for them. Being 4, he struggled and everybody was waiting awkwardly while the vicar was trying to help him pronounce words.
So, am I being unreasonable to ask for your cringe wedding stories?