Trish, as much as I would like to help you I am equally as powerless as your partner or your parents.
The only thing I can do is support and encourage you with my words and point you in the right direction.Only you have the power to open the door and go through it.
In AA I learned some tricks about staying sober.
a) It was not the third drink that got me drunk, or the seventh. or the twenty third...... it was the FIRST.........think about that the next time you tell yourself just a couple
b) Weigh the pros and the cons.........is getting wasted more important than the love and respect of your family...?
c) Whatever you think might be driving your desire to drink bear in mind that there are far better ways of dealing with those issues.......through counselling, discussion and positive action.......
d)Learn to ignore the alcoholic voice in your head telling you that your future will be dull without alcohol.