I have not been able to find the answer to this question so I hope someone can help me:

I have an appointment for my GE interview at LAS. My arrival day was not available so I need to go there on a day that I am already in Vegas. Is that actually possible, I mean is that Enrollment Center before security so I can visit from the strip and go back again? I understand that some interview places are right at arrivals so after security. If that is the case at LAS, it would mean I cannot get there.