2K Primer question

[Mike H]

I've done several paint projects before, but this is my first full car paint job from bare metal to clear. I sprayed the car in epoxy primer then a 2k acrylic urethane. My question is do the 2k acrylic urethane primers usually come out with a little shine to them? Mine has almost a satin look. And my next question is does all have to be sanded for the next layers to stick? Areas like inside the seal gutters on the truck I didn't plan on sanding.