Is this the ACP lounge or is it open to everyone?
It's open to everyone!
There are areas that are open only to ACPs or Moderators etc, but the Forum Lounge is open to everyone.
If you are not blocked from a forum, then it is open to you.
I can see where one might think it's an ACP/MVP Lounge but it's not. Anybody with an Adobe ID & password can post/reply here.