On 2-class, standby for 3-class, questions
I am flying SAN-LAX-MIA next week. I plan to standby for an earlier flight on both segments. On LAX-MIA, my ticket is booked in P, the flight is F and Y. The flight I want is F, J, Y. Can I assume that I will be booked into I class if standing by? What if there are plenty of biz seats left, but no I? And, if I end up with a non-I seat, would I, in theory, be able to use miles to go from J/D to F at the airport?