Hi,
I think the only way for them to get it is to tell them- tell them that you aren't effected by the bipolar 24/7, that most of the time, if you're pissed, its because your pissed, not because of the bipolar. I think its time to put your foot down- tell them that you won't accept any more drinking, or late night parties. If they don't listen--it may be time to get new roomates.

Good luck