The alternative is for the venue to have "recording time" and "non recording time." If you go during non recording time, you're not allowed to bring cameras int

The alternative is for the venue to have "recording time" and "non recording time." If you go during non recording time, you're not allowed to bring cameras into the space. And if you don't want to be recorded, you go then. And if you want to record, go during recording time. Think of it like a public pool. It is unreasonable to say that there should be public pools that children aren't allowed into, but it's also unreasonable to expect all adults to want to swim with children. This is why we have the concept of adult swim time.