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There are literal Warlocks and Shadow Priests walking around openly in Silvermoon, even though the lore TELLS US they are banned from the confines of the city limits. Nobody complains.
Dalaran was also predominantly Alliance for a big part of the game's story, to the point that Jaina brought it outside of Orgrimmar during the Siege, while also having disallowed ANY Horde presence there, but it remained in Dalaran and Horde were visiting just fine in game.
