Mincha is scheduled for 6:30pm, program at 7. They recommend arriving in the parking lot at 5:30 to allow for passing through security and finding your seat. I’m guessing it will take less time than that, but they haven’t done this before (most attendees to Citi Field events are more familiar with the stadium than those expected at the asifa), so they’re just making sure. I think I’ll daven Mincha earlier, and aim to be there at 6. If I’m right that it won’t take an hour, I’ll be happy to answer Amen and Y’hei Shmei Rabba a number of times with tens of thousands of Yidden.