The AP1000 is simply a "standard plant design". The layout, systems, comand and control functions, etc will be the same from site to site. But, that only applies to the reactor building/turbine building systems and components. Everything outside of that bubble can and will be different.
To top it off, some info quoted from 10 CFR 55.53
Each license contains and is subject to the following conditions whether stated in the license or not:
(a) Neither the license nor any right under the license may be assigned or otherwise transferred.
(b) The license is limited to the facility for which it is issued.
(c) The license is limited to those controls of the facility specified in the license.
So, per the above portions of 55.53, a licensed operator at our facility (VC Summer) could not go to Vogtle and simply start working as a licensed operator. The qualification process would begin anew.