I wouldn't even call most of those privileges. You wear corfam's because you simply don't have time to shine your shoes (you should be busy in a leadership role). You don't need to wear BDU's with sleeves out all the time because you're not in GMC training mode, so there's really no point. You get a name tag for your service coat because more than likely your detachment doesn't want to waste money making an expensive silver nametag for someone who just drops out a week later. And the only reason people would get a key is because they need to get in and out, lock up at the end of the day, etc.
The only actual benefit I know of is getting automatically contracted (and having that stipend money roll in). Aside from that, it's just stuff related to doing your job or getting rid of rules that don't matter once you're done with FT.
