We're in Alaska now. We left Vancouver, BC on May 4th and came into Alaska via Dawson City and the Top of the World Highway on May 21.
Many of the "preparation" suggestions I read grossly over exaggerated the need for special preparations. Other than possibly adding rock protection to your tow car, I don't feel anything additional is needed that we don't normally haul along with us on the road.
I did add a couple of new accessories to our regular haul load prior to this trip which I'll be carrying full time now. I brought along my power washer from my garage. Many of the RV parks here have a wash station but the prices are really high at some. One at the RV park we stayed in in Tok was $20 for the RV plus $8 for our toad. It was a standard pressure washer where you do all the work. At the next RV park we stayed at in Valdez they were okay with me washing our stuff in our site so the washer came out of the basement and was put to good use. This system will also work well when we're boondocking and plan to be in a park the next night. It can use the water on our coach to give it a good washdown. I also added a small air compressor to our load just prior to this trip. I planned on having it along for airing tires but found it also worked great for blowing out the engine compartments and other areas of our tow car and the coach after crossing the VERY dusty Top of the World Hwy between Dawson, YK and Chicken, AK.
I also did not carry along one thing that we've previously had and that is the large rear flap with the coach manufacturer's name. I left that at home to avoid possible rock issues on gravel repair sections of the road.
Retired and livin' the RV dream!
2005 Newmar 43 ft. MADP, Cummins ISL 400HP, 2008 Honda CR-V toad