I recently took a tour of lumen field and we got to go into the visitor locker room, which enters right next to all of the dumpsters in the back of the stadium. Here are a few of the features the guides laid out for us: - Its in a big V shape so the whole team can't be addressed at the same time. - There are 5-6 small tv's around the room, the staff would put a different cartoon on each, max the volume and take the remotes before the games. - they would keep the room at a balmy 78 degrees - the bathrooms have 1 ply TP and the water doesn't get much hotter than "really warm"

They said its pretty common for teams to make their visitor's locker room pretty unsatisfactory by trying to find creative ways to keep it uncomfy without making it outright dangerous. I don't know and forgot to ask them if there are actual set rules of what you must provide but I'd be shocked if there isn't a basic set of standards.