Ok. Usually if you even try to step foot into the Alliance/Horde quarters as the opposite factions, the guards see you and you are teleported out with a "Trespasser!" debuff. However, if you are horde you can fly into the Alliance BG room. While you are in here you can kill the Alliance Brigadier General (I think he is the one that hands out daily BG quests/turn ins for marks..correct me if I'm wrong)!
First, you need to fly around to where I have marked on the map with an X.
ImageShack - Hosting :: hordeintoalliancequartemz6.jpg
(>9,000 hours in MS paint)
From there, fly around then inside the front of the building, staying as close to the cieling as you can. Once inside try to land on the Strand of the Ancients portal. The Alliance Brigadier General should be right in front of you..he has around 30,000 HP, but he is only level 60 so he doesn't hit hard.
While inside try not to move around too much though, because there are guards on either side of you that will teleport you out if you get too close.
When the servers come back up from the tuesday maintenance I will post a video to make it more understandable.![]()