The waltz performed at a quinceañera is commonly called a vals.
Vals is the Spanish word used for a waltz, and the dance is a familiar part of many quinceañera receptions. The celebrant may perform it with her father, relatives, or a court of attendants, sometimes after weeks of rehearsals. Some families call the choreographed presentation the vals even when it incorporates other musical styles.
The waltz traditionally gives the reception a formal, ceremonial moment. It can introduce the celebrant to guests and provide a public transition from the religious or family presentation into the social celebration.
There is no single required choreography. Modern quinceañeras frequently mix ballroom steps with pop, regional Latin, or contemporary dance, so a celebration can include a vals without limiting the entire performance to classical waltz music.