The formal waltz traditionally danced at a quinceañera is called a vals.
Vals is the Spanish word for waltz, and the dance is often a central part of the reception. The honoree may perform it with a parent, another relative, or members of a court of honor. Modern celebrations frequently add a second choreographed routine in a popular dance style, but the vals remains the conventional formal dance.
The waltz itself is a partnered dance in triple meter, commonly counted in groups of three. Its inclusion gives the event a ceremonial character and allows the family to present the honoree to guests.
Not every quinceañera includes a vals, and its choreography is not standardized. Some families use a traditional ballroom arrangement, while others combine waltz steps with contemporary music or stage a separate surprise dance. Salsa, cumbia, and merengue may appear at the party, but they are not the name of the formal waltz.