I will be thinking good thoughts for your dad, thomas11. As to the all-inclusives in Mexico, I have stayed there with my wife (who drinks) for the past 4 years. I have been sober for almost 5 years. Everyone is different, but for me the resort didn't prove to be a trigger. There is so much to do, and eat, at these resorts, that I was able to focus on that instead of the alcohol.
I wish you the best. Please let us know how things turn out.
