Typhoon 2 other people
What if they are both serial killers?
What if they are a lesbian couple??
gudgawd...what if they are a couple of gay fellas??? And try to steal your wife's wedding ensemble?
(fwiw, I don't have anything against any of the above scenarios. Except maybe those killers, I guess.)
Just tell the neighbors you aren't going. Via text, of course, like them telling you about this setup.