Here is an FAQ for one particular debutante ball in NYC this year.
https://www.internationaldebutanteball.org/faqs

Sometimes the debs take a deep curtsy, such as all-the-way-to-the-floor curtsy. Fast forward a couple of minutes:

that they curtsied all the way to the floor. It is no longer custom in the U.K., by the way.

or something stupid like that. Imagine spending all of that time practicing nonsense as if they are part of a royal court.

SMH....

the Tuxedo Park Harvest Moon Ball.

I laughed in his face.

That was the end of that.

Every young woman at my gdaugter's ball engaged in volunteer work before their formal debut.
In our family, the ball was an acknowlegment (not a reward) for doing good things.

these parts (Texas) you are more likely to see a quinceañera than a debutante ball.