Factual error: In Las Vegas Paris and The Vencian are not next to each other. They farther part then that. Next to Paris is Ballys. (00:53:10)

Factual error: The sign in Vegas has the wrong wording. It says "welcome to the fantastic Las Vegas" instead of "Welcome to the Fabulous Las Vegas". (00:51:10)
Chosen answer: The reason that the cloned alices were put through the tests was their attempt to get a "perfect" clone of her. They knew that Alice was the key to taking back the zombie infestation, so they were trying to get the "perfect" clone. The perfect clone would have all of her memories and reactions, so they put the clones through that testing facility. If she made it out alive, then she was the perfect clone. If she didn't, then it was back to the drawing board.
Nick Bylsma