Salomón Askenazi’s El Rey de la Fiesta is – much like Spike Jonze’s Adaptation. (2002) – concerned with identical twins and twinned identities. Where 50-year-old husband and father Héctor (Giancarlo Ruiz) is uptight, unhappy and deprived – self-deprived, even – of everything that he desires (sex, fun, freedom), his brother Rafael (also Ruiz) is Héctor’s…