The downside to World Youth Day is the fulfillment of Mary's prophecy at Fatima:
“Certain fashions will be introduced that will offend Our Lord very much.”
Make reparation for the sins of WYD. (And these were mild compared to the string bikinis.) Do you know the history of the bikini? When it was introduced in 1946, the designer couldn't get a model to wear it. He had to hire strippers. Now girls strip for free.