Alcohol is "don't hear don't tell". If no one complains about it, or if you don't go out of your way to confess to it, Elders won't do anything about it.
In general, they appear more concerned to what you do while intoxicated rather than simply being drunk. If you did nothing wrong while drunk, you can use excuses such as :
- I wasn't aware that I could not mix some medecine with alcohol (My favorite).
- I had worked all day and was burned out, I can see how this was missunderstood as "drunk".
- I have an extremly low tolerence to alcohol, one drink and I'm out.
However, if you trashed a party while being touchy feely with the sisters, no excuses will work.