Why should this post be blocked? Why is it a spam? It is an event. So what if photography is not allowed? Does everything posted here, must have photography permitted to be allowed to post?
If the event posted is of little interest to us, it will die a quiet death itself.
To keep the announcements as relevant as possible, otherwise we will get all sorts of "events" being posted if we do not stick to our guidelines. As Deathsilk himself said "You can try. If bouncer/management catches you, you're probably screwed."which clearly indicates that this is NOT a venue to shoot.