I'm flying a DL-coded, AM-operated flight pairing (LIM-MEX-MCO) in late April, and found this (old) thread and wondered if the advice is still accurate.

Can anyone confirm that as a DL PM, I might be upgraded? Would either flight be upgraded or only the MEX-MCO one?

Also, will I have to clear customs and go through security again as my origin/destination are outside Mexico?

Thanks!