Thanks all for your inputs. The flight is at 0615 on the Sunday after Thanksgiving, so I'm assuming it WILL be crowded, both at checkin and security. Plus I don't know when the TSA checkpoint opens thus if there is any benefit to getting there really early (coupled with the loss of sleep!). If there is, in fact, a priority security lane that Premier Access would use, sounds like it may be worth it, the cost is currently $24.