You will die if you adjust your bindings yourself.
Well, actually, I'm pretty sure you'll die (eventually) even if you don't.
Mounting is either:
(a) Really easy with most bindings that are part of an integrated system with plates/tracks/whatever. You can mount Atomic bindings to Atomic plates in about 8 minutes, and that's allowing time for for ponderous contemplations along the lines of "Did I do that right?," as well as some time to figure out you can't put the boot in when the little metal deal that holds the brakes up is in the way. You should have one "specialized" piece of equipment: a pozidrive screwdriver.
(b) A bit tricky and (more importantly) light on margin for error if you have the "old-fashioned" set up where you drill holes in the ski.
I do (a) myself. I don't do (b): it's not rocket science, but I have visions of a drill bit emerging from a pristine base in a manner akin to the first appearance of the Alien in the eponymous movie.
Forward Pressure adjustments are easy with all current bindings (I think) if you know what indicator you're supposed to be looking at. If you don't, it's haphazard and silly. Oh yeah:
While not indicatorcorrect
take the boot out
put the boot back in
check the indicator
Release (aka "DIN") adjustments are easy to make. It isn't executing the adjustment that might cause trouble, it's deciding what the adjustment should be. You have options as to who makes that decision, ranging from a (i) a kid working for minimum wage who reads a simple chart, to (ii) someone with decades of skiing experience and intimate knowledge of your skiing habits, previous injuries, previous experience with the exact same bindings, and the current status of your various aches and pains, to (iii) someone with a testosterone-fueled belief that higher settings mean you're a better skier. Okay, you're typically stuck with one or the other of (ii) or (iii), but you can always choose (i) if you so desire.