How do I get in from the train station

Be on the side of the station closest to thd amphitheater and the fence will be open. It's literally a three minute walk!!

I would encourage you to use Google Maps to navigate from "Irvine Transportation Center" to "FivePoint Amphitheater" and switch to the walking directions. It looks like there's a walkway from the station to the street right in front of the venue entrance.