Jose Antonio Riquelme Alvarado, father of Spanish filmmaker Pablo Riquelme, has a brief cameo in the movie. He was ten years old. The reason why he was cast in the movie is that one of the locations picked for the shoot was in fact his boarding school: Colegio Diocesano Santo Domingo, in Orihuela (Alicante, Spain). Pablo Riquelme would many years later enroll in the same school, where he started his filmmaking career.
Sancho Gracia was named Sancho Garcia on the movie poster.