Revolvo
it seems to me that you are not in favour of this party, and looking for an excuse to say no.
You are under no obligation to tell the applicant why you will not approve his request, and neither are any other residents obliged to do so.
I’m not even sure who ( the SC or the OC ) has the right to approve this request. I doubt that ” a majority” need to approve this. I think that everyone would need to approve the request because the inconvenience affects everyone and there is no alternative to the inconvenience.
Just say no
Robert