Our 2017 Alaska trip was a breeze. We pulled a fifth wheel and had a LineX spray (like Rhino liner) in a matching color on the lower front. The truck had Rock Tamers. I did place a piece of screening behind the grill (in front of the radiator), but didn't seem to need it. All in all, we get more damage from the road junk in North Idaho in winter then we encountered in Canada and Alaska.
The comments on here are all pretty on point, be careful and enjoy the trip. Oh, when you get to the Salty Dawg in Homer, look for our dollar bill on the wall.