In my opinion if you have proof and documentation that your cancer was caused by alcohol then by all means I wouldn't have any at all. If not, and you enjoy a few drinks here and there, and it was part of your normal life stye that you enjoyed, then I would go for it. Being happy certainly plays an important part in your health too. Is it ok for someone to have a drink that has never smoked or drank in their lifetime that now has oral cancer? What should they stop doing?