Who needs to defend??
I'm enjoying and laughing my ass off at all the comments here.
The four teams that will be using the community rink facility will have it all to themselves. It does have four separate locker rooms (and showers!
). I can't say if they are using any of them because I honestly don't know. What the clip in the OP shows is them just beginning to set up some of the other required areas over the actual community rink ice surface.
In the end they will actually have more room to operate than they would at most other arenas.
NCAA rules prohibit the use of the Sun Devils home locker area (which is real ice from what I've seen). Coyotes are going to use the visiting team locker area, which I've heard is quite spartan in comparison.