The Youth 2000 I attended was geared mostly for confirmation students.
It was held in a gym. They put up an altar for mass in one end of the hall.
They set up "the burning bush" (the wood planks for candles and the monstrance) in the middle of the gym.
First, There was a talk about holy mass and transubstantiation. That, in the upcoming mass, Jesus will make himself truly present in the disguise of bread and wine. And that one of the consecrated hosts will be displayed in a monstrance atop the burning bush.
Then the mass begins.
In the end of mass, the priest exposes the blessed sacrament and brings Jesus on top of the burning bush.
Then there was a talk about adoration.
And then they go into praise and worship, with Jesus' Real Presence literally in their midst.
The blessed sacrament remained exposed for the whole weekend, while the attendants listen to talks about chastity, Mary and the rosary, universal call to holiness and specific religious vocations, etc, interspersed with praise and worship.