Originally Posted by
vprp
If businessfirst is not available, would my mother be eligible for economy plus even if she's not an elite member with United?
Not technically, but it doesn't hurt to ask.
Originally Posted by
vprp
Also, at NRT, would she be eligible for lounge access at the NH lounge if she's in on an incoming business ticket but booked on economy departing NRT?
Eligible for the United Club, but not the NH lounge (assuming she's not *G).
btw, the UC is probably the place to ask for a free E+ seat.