Where are Johnny's cousin. Lisa's boyfriend the waiter. the bandleader and the owner of the lodge from the movie dirty dancing?

In the movie "Dirty Dancing," Johnny's cousin is a character named Billy, who is portrayed as a friend in the resort. Lisa's boyfriend, who is a waiter, is named Robbie. The bandleader is Tito, who plays music at the lodge, and the owner of the lodge is Max Kellerman. These characters contribute to the dynamics and storyline of the film, set in the summer of 1963 at a family resort in the Catskills.