Currently work for one of the branches of Footlocker. Going on 2 yrs in April.
I can tell you from experience, if you're a newbie part time associate and your store doesn't get too many pairs of the hot shoes ( >24) you won't have much of a chance of grabbing any or even any with your discount for that matter. If your manager is cool, he/she will probly hold a pair for you if all the discounts are going to be used. Luckily for me, the store I'm in is getting remodeled at the moment, meaning when it opens there's going to be restocks and better releases in the future so I'm amped for that, personally.
As for the 50, I always help out my fam and friends. You get a nice limit so I look at it like why let it go to waste? Hope this helps OP