Depends on the ruling and laws. I'm sure someone who didn't allow homosexual couples would not want to welcome them even after it was ruled as unconstitutional to discriminate to them in the US (even if they are middle eastern and laws in their homeland do allow for that). They were technically rowdy customers but the law allows them to be in as long as their rowdiness was due to their identity and not other neutral actions (although we know they will be judged much more harshly on those actions as an attempt to disciminate).

A bit of a crude comparison, but I hope it gets the point across that the behavior depends. retaliating against rules that the EU later determines to be bad rules may open a case to allow them, as long as they don't break other rules.