powrful1

I am curious about listing for F vs Y and other passengers onboard. I am thinking of using my benefits for the first time to goto Hawaii and would like to go over there in first. How does United treat nonrevs when it comes to who gets the last seat in F, does it goto a miles member who listed for Y or to the nonrev. I am just trying to make sure if I pick certain flights I will get it, or if I am spinning my wheels look at another arrangement.

Thanks.