Help with family.. Please. ?

You should tell them how you feel about your father drinking and your mom not doing anything about it. Sit them both down (very important that your father is sober) and tell them that you have been worried and fed up with their crap and it's best that they prospone the wedding and maybe have a break and if you're old enough move out or go over to a cousins and give them an ultimatum. Say that if they keep up with their **** they will lose their daughter. Good luck! :D