I think it's great you recognize that you made the decision to drink.
As is said many times here.. it comes down, IME to wanting to quit more than wanting to drink. And for me a big thing was wanting to live a sober life (vs my many years of just wanting to not have negative experiences with alcohol).
You may decide you want a 'last hurrah' in Portland. I remember all my last hurrahs. Or you may take a leap of faith and trust that you'll be happier sober. I think all of us can attest that there are no half measures in sobriety.
A normal person when faced with certain insomnia would maybe talk to a doctor about getting a prescription for something. An alcoholic gets drunk. Alcoholics see alcohol as the solution to everything!!
