Given the difficulty that gated communities have in stopping JWs from preaching within their grounds, I wonder what would happen if preachers wanted to knock on the doors of the Bethelites residents? Maybe the vast apostate army could test it out as part of their campaign.
Requesting visitors not to take photos of the outside of their residence is not surprising. They have balconies and at some time or another they are likely to be used. They wouldn't want outsiders to be able to identify who lives where. With the quality of cameras these days, it may also be possible to zoom into the units and see what is going on.