polýMATHY tried to use his Latin to talk to random priests in the Vatican and it goes pretty well. One of my instructors did Latin translations at the Vatican.

I would would have been a barely functional novice with my Latin verbal skills (even when I was still taking classes and using it regularly). My Latin knowledge was almost exclusively read, not spoken – so it would have been rough times. I could listen to him and understand a good bit of what he was saying, but I would have struggled to respond.