I have recently started doing key rooms, mostly the skeleton key room in Krokotopia. I have used all my keys so I started using team up and when I get there no one has a key, not even the person that started it. I think that you should only be able to enter the whole thing if someone has a key. I cannot do any team ups for another 10 mins for going somewhere and not being able to battle. I think that a whole team or single person should only be able to enter those kinds of places with a key so people don't fight and get mad and lose a team up. I am not saying that for Nightside because it is a whole other thing but places like the skeleton key room under the library should only be allowed to single players or teams if someone has at least one key to get in.