Thank you 90Duck for that precise and helpful info to the OP. Now I am getting it, that SubieWRX20135spd, you are considering "body side molding." I did not even remember it was offered (was not an option I chose when I ordered my car -- so out of my mind entirely).
Questions and thoughts please SubieWRX20135spd, since that body side molding is $265 list, even discounted, around $225 delivered, and since you are going to need to have at least touch up paint, even if you own touch up paint already, it would cost about $225 for the "molding coverup option."
I am surprised that the valet service is not paying 100% to have it properly repaired by a body shop of your choosing regardless of cost?
Do you like the side molding? If you were ordering a new 2017 right now, would you order it? If not, I personally would not consider that option.
What kind of an estimate have you gotten from your own-chosen body shop to have the door fully fixed, including the dent pounded out, and the door properly and totally painted -- so your car looks as good as it did before the valet screwed it up?
If that estimate is (and I am picking a wild amount), $335 to have your chosen body shop do the work excellently, and your door mounding solution is going to cost $225, if you would not have chosen when you bought/ordered your car, is it worth $100 to live with it, looking at it each and every time your walk up to your car. And if the difference is even $200, is that worth it to you?
If you actively like/want the door molding and would have added it if you had ordered your car from scratch, the door molding coverup is a great solution to you.
Only you know what is best for you. Best of luck whichever way you go.