"The Pharisees committed similar sins (adding to the law) enslaving the Jews of Christ's time."
Not quite accurate. It was the occupying Romans, and not the P'rushim (Pharisees) who enslaved, executed, imprisoned or banished rebellious Jews. True, the P'rushim collaborated with the Romans, but they could not set policy nor were they in favor of enslavement.
As for drunkeness, there is a definite implication of it being frowned upon (such as when Hannah was admonished by Eli, the High Priest, when he thought she was drunk), but the only forbiddance concerns the priests serving in the Temple.