Goatlady. Listen to your father.
99.999999999% of the time - with identical applicants for employment (or roof contractors, or babysitters, or bosses, or limo drivers, or teachers, or whoever that's vying for a job or a paycheck...) and the ONLY differentiating thing between the two is that one has a substance abuse problem - the one with the perceived LOWEST RISK, the one WITHOUT a substance abuse problem is going to be chosen. And for any of us who have been around the block to say anything different is being disingenuous.
You may not like what I'm saying but at least I'm telling you like it is. Does this mean there is no chance for you if you tell the world you're an alcoholic? NO. But I assume that with anything you do in life you will want to weight the risks. Is this risk too much for you and your future? Yes? No? Ultimately that is up to you.