AA will absolutely not let anyone, and I mean anyone who is not an active AA Pilot, or with a company that is contracted to do training with them into the Training Center.
I speak from experience, as I am retired AA, and wanted to use the NG Sim to get current about 2 years ago, and was not allowed to do so. TSA has to approve you and they arent interested in doing that.
I also suggest PAIFA.