As a catholic, and practicing as go to church most Sundays unlike most here posting, I will support the pleb provided that it does not force priests to marry same sex couples in a church (and I know the proposal was going to say priests would not be forced to marry same sex couples in a church just like in Ireland).
Now what gay couples do is none of my business as it doesn't involve a crime IMO (unlike in some countries where it is the death penalty or caning quite barbaric for a choice they have made that is not my business).
These days gay couples can also be parents so marriage is just a natural extension. Good luck to them. To the rest get over it.
However, those wanting to oppose their opposition to the issue, like Court, have every right to do so just like those in support of it. It is a democracy last time I heard here. Demanding her name be removed from the tennis centre is a blight on the right to free speech.