I have a 13h layover at DOH between an arriving Z fare first class flight and a departing U fare business class flight. The first flight is scheduled to arrive at DOH just past midnight. I think I'm not entitled to the complimentary STPC because I booked Z/U fares? If I have access to the AS lounge is it feasible to camp in there for 12-13 hours? I think the Oryx hotel may be another option for me but it's a bit expensive.