Does Alcohol aggravate your UC?

Yes, I think even people without bowel issues have problems if they over indulge in alcohol. It irritates the entire digestive system. Not uncommon to have the runs when you're hungover. Different types of alcohol can have different effects too. If you look at diets geared to IBD (SCD, IBD-AID, etc) there are recommendations on which alcohols are easier to tolerate. Dry red wines and gluten free spirits seem to be safer, beer is usually banned from these diets.
In general, over indulging is bad for general health and therefore bad for your condition. If you're symptom free/in remission, drinking in moderation can be fine. Find a drink that causes the least amount of issues for you personally.

Your alcohol response, like so many things UC, varies greatly person-to-person. In a remission, alcohol in moderation does not have a noticeable affect on my UC. Flaring, it can. Some here compare drinking alcohol with a colonoscopy prep even in a remission.

Listen to your body and don't over due it. We can be allergic to the gluten in beer and some other spirits (i.e., a wheat whiskey). We can be allergic to sulfites which are common in red wine, as an example. You can try gluten-free, and sulfite-free alcohols in moderation and see if you can tolerate them.

Alcohol is a known gut irritant, so it can slightly inflame and bother the GI-tract. We already have inflammation issues with an UC so you're adding gasoline to the fire when you go overboard with alcohol and binge-drink.

Even for people with no UC or any stomach problems, alcohol can disrupt your stomach the next day. For many people, me included, alcohol causes problems the day after. I've found that the amount of food in my stomach impacts how I feel. If my stomach is completely empty and I drink, I am hurting much more than if I have some food in my stomach.

Like most things, this varies from person to person, trial and error is really the only way to know for sure.

I tend to have a glass of wine and not have trouble

Same here. A glass of wine doesn't bother me but beer can cause trouble. Most beers contain gluten.