how long should I wait before I can consume alcohol and exercise once my Accutane treatment is completed?

It is going to be hard for you to find an answer that will tell exactly when you can drink alcohol, or do heavy exercise. In my experience I tell patients that once they have stopped taking their Accutane they may have a glass of wine with dinner, but to wait for 2-4 weeks before drinking more than that. And as for exercise, I have patients that exercise even while they are taking Accutane, I would say that there is no contraindication. You can start working out when you feel you can, and see how you do, it is ultimately dependent on how your body feels...as everyone is different. But it is safe to both diet and excercise.