The intent of the camera system is to have evidence if an incident occurs. I doubt the bar owner is going through it at the end of the night looking for which parts of it are interesting enough to post on Facebook.
Why can't I have my own evidence if an "incident occurs" that affects me? It seems like quite a double standard.
BTW, there are already a ton of cell-phone videos taken at that bar and posted to YouTube, so I doubt having a new type of recording device is actually going to make a difference:
The intent of the camera system is to have evidence if an incident occurs. I doubt the bar owner is going through it at the end of the night looking for which parts of it are interesting enough to post on Facebook.