All of us our different in our tolerances to certain things. I used to drink in moderation when I would go out, I've never been on Remicade or Humira but have had Crohn's for a long time.
Those that have Crohn's are told to avoid alcohol as it may make your symptoms worse but like I said, we're all different and some people are able to tolerate alcohol without a problem.
I rarely drink now, I had a few drinks back in May for my brothers wedding and that had been the first time I had a drink in about
3 years. I didn't have any problems, not that night or the day after.
Some things to take into consideration;
Alcohol is metabolized through the liver as well as Remicade. It may be a good idea to have liver function tests (liver enzymes) when you go for an infusion if they're not being performed already. One of the possible side effects of Remicade are problems with the liver, that's why your GI may already perform tests on your liver.
Alcohol may deplete you of nutrients, I bring it up because having Crohn's, we're already susceptible to having deficiencies and suffer from malnutrition. www.livestrong.com/article/529313-can-alcohol-deplete-the-body-of-nutrients
There may also be an issue with intestinal flora and this has to do with the intake of sugars, wheat, gluten (alcoholic fermentation is the conversion of sugar into carbon). I'm far from an expert on this, so I will defer to this website for you to read. It's very informative-www.wikihealth.com/Crohn_and_colitis:_foods_to_eliminate
Alcohol is a diuretic and can dehydrate you, it would beneficial to drink water after having some drinks.
Just wanted to provide you with a proper amount of information, hope it helps and best of luck to you.