Just advertise by word of mouth, unless you want a homosexual couple to try to bully you into letting them use your facility.
Actually, with the bible verses we will have on the wall regarding marriage, I’d probably let a homosexual have their event there. But part of the terms are that they can’t cover any of it up. And to be clear, it deals directly with marriage being between a man and a woman.
If they are that desperate, so be it.
To be clear, I’m just thinking out loud, in case one “gets through.”