Examples...
Son in law scheduled on UA/CO out of IAH Sunday evening for a trade show in LAS. Flight cancelled. Resked for Tuesday PM flight, after being offered a IAH/SFO/LAS late Monday requiring RON in SFO.
Stood buy all day Monday at IAH, finally able to board 5th flight direct to LAS.
Niece in Paris, scheduled to fly AA back to Texas through JFK Monday. CNXed, with 3 day wait, but convinced agent (She's "elite') to be accommodated on another airline to MAD, then got a middle seat in Y on AA's direct to DFW Tuesday after RON at MAD.