Does this mean you land at 745pm the prior night? Sound like the late LHR flight. I guess you could keep checking for availability on an earlier LHR flight *AND* the 545pm LAS flight. Or, is there a jet blue flight you can grab? I know it wouldn't give FFD but at least you'd get to Vegas a day earlier....
There is actually one flight even later. I don't mind the overnight in New York.
I was just hoping I could use the First Dining the next afternoon, but suspected the answer.
It really is rather odd rule since it is ticketed as a connecting flight, but AA being AA . . .