Lars, I think you were smart to "pass" the alcohol last night ! Now that you are feeling better, you don't want to risk injury ! Alcoholic beverages are dehydrating and sometimes body takes water from colon regardless of how much water you take orally.
I would stay away from it, if I were you. As you said - once you fully heal you will be able to be more liberal. I personally can have great time without any alcohol, I did not drink it regularly even when I was much younger - just never needed it to feel great. So I don't think that is sucks so much - just be patient - your fissure healing is now priority !!!
All the best @: )