Using PP to upgrade to avoid additional fees?
 

My friend's daughter - zero status with UA - has an upcoming 2 segment domestic trip -> outpost to hub, hub to Hawaii
right now she is in the back of the plane with regular E seats
- and planning checking a bag -> hence fees

it looks like I can use 20 PP to upgrade from outpost - hub (nothing available for hub to Hawaii, obviously)
will that get her out of paying the check bagged fees
any other benefits - beside an UG on a short (45min) segment - that might extent to the hug-HI segment?

sorry if this has been covered before.....

Only if cleared before checking bags, no refund if cleared after paying bag fee
earlier boarding on upgraded segment and general domestic F cabin benefits.

trying to decide if worth the 20 PP vs checked bag fees
the flight doesnt look like a heavy load and since she is too young to drink - no real F benefit