example could be esplanade with its no photography / video recording during public events on its venue. Reasons is understandable as performing in esplanade means engaging the in house recording company so any photography or video taking by public even if parents of the performers might disturb their rice bowl.
another one could be marina party by the bay where again recording isnt allowed and at night would be very challenging even for hp cameras.
I rather they print it in black and white on the tickets and poster that recording isnt permitted so that one shot the person know whether can or cannot bring camera.
As for original question, for those in the location scouting business...do you check the photography side before recommending the locations?
Also i heard in most events nowadays they will announce many days in advance and even on the performance days. But for performances where "no photography" is not mentioned, would you stop photo taking or even delete the photos or even to the extent of handing over the memory card/camera upon the request of the usher/security guard?