I'd say If you have to get drunk to be able to handle the loss instead of being a broken down mess, (screaming, crying, telling other people you want to kill yourself because you are no longer able to handle life anymore without the one that died), yea, more power to you. I think getting drunk and having a party is idea because the loss is only going to affect the living so the living should make It a happy time and tell/share the stories and legacy of the person that is now not part of there lives anymore. If there is some form of afterlife I think they would want you to not dwell on the past and just live, (learn, grow, share, experience) your own life.