I just booked 6/22 EWR-POS-IAH-EWR. Arrive POS 5am, leave 8am. Not great at 5.7cpm but I need the miles - plus I can take the Monday off. Looks like Priority Pass (via my Amex) can be used for the VIP Flyers Lounge, which opens at 5am. So hopefully I can stay inside the terminal & be able to go to the lounge. I'll post a full report when I do the run. In October, I may go again but stay a day or two.