Yes, that "Hertz discount" they give isn't much - I get them in the mail all the time.
My corporate discount beats that by a mile.

I'm thinking of cashing it in. I'll get the
60K miles into my UA account (I think that's how they handle united awards) and I'm sure
I'll find a place to use the hotel (Cairns or Surfer's Paradise).

A bird in the hand...