>Also, in court, it undermines your case for your own client.

First of all, no it doesn't. Lawyers don't testify in court cases, so their opinions mean nothing from a legal perspective. Secondly, that means MSG would want them to attend so they could film it. Not keep them out. Are you saying MSG has their opponents best interests at heart?

> They broke it. Maybe unknowingly, but that’s on them.

They did it unknowingly because these are the first times it's happened. This is not common, and possibly illegal. In the complaint about Radio City, the liquor license requires them to be open to anyone who isn't a security threat. Representing an opponent in court isn't a security threat.

Don't make the top law firms mad at you. Supposedly Mark Twain said:

“Never argue with anyone who buys the ink by the barrel.”

So you're saying if my firm sued Microsoft it would be a breach of ethics to play a video game on a windows operating system, let alone type my complaint on Microsoft Word - god forbid.