One that could have been cringey but is one of my favourite wedding memories: friend raised in UK but from large Eastern European family. About 20 of her relatives would make the wedding, but another 100 or so would have to just send 'telegrams', which would be read out at the wedding.
The chief bridesmaid would have been doing the reading had some emergency and couldn't attend, but the best man took over her duties - until it dawned on him and bride that reading out lots of well-wishing messages in languages he knew none of was going to be a bit tricky.
So best man had a week's crash course in how to pronounce Russian and Polish and decode the older generation's handwriting. The time came after the meal, he stood up and was presented with about 30 cards with a good paragraph in each, and valiantly attempted to read them out.
It could have been mortifying, but the claps and cheers from the tables who understood the messages (sort of), and then glasses being thumped on the table at the end of each one and then someone proposing a toast to Great-Uncle Thingy, then Great-Aunt Wotsit, and the whole wedding toasting these people, and then the best man moving onto the next one, sometimes parent of bride standing up to explain something in English - made it a really funny and heartwarming half hour. Though best man practically collapsed at the end, and not just from all the vodka toasts!