Originally Posted by
frappant
First of all, how do I even look up the Waitlist?
It's not visible yet.
Originally Posted by
frappant
Is the Expert mode only for booking, not for getting more detailed status info. after you've booked?
Expert Mode tells you the inventory available. PZ is business class upgrade inventory. The overall business class inventory (J C D Z P PN PZ) is an indicator of how seats are selling and whether UA may open PZ.