Sorry to bring it up again as it's probably been asked a thousand times but I really get confused with the access rules. Can someone correct me if I'm wrong?:

I booked an award itinerary using American Airlines AAdvantage Miles, all flights are on QR metal. I'm flying from MCT-DOH in First (fare class Z) arriving at 13:30 pm. Then I depart DOH-LAX in Business (fare class U) at 08:05 am the next morning. All booked on the same ticket/itinerary. Am OWE (but I don't think that makes a difference)

I am thinking I, um, don't have access to Al Safwa? Because Z fare class upon arrival and departure is in U the next day? Or maybe I do because I'm crossing my fingers?

Apologies again and thanks in advance, I'm a bit of an airhead when it comes to these things