I recommend you plan for one night in Tok. It’s a convenient stop and your first chance to buy the less expensive US fuel. There is really not much in Tok but fuel, a decent restaurant or two, and a couple of basic campgrounds plus there is nothing between the US border and Tok. Unless you really need a campground, just ask at some of the businesses there (like the restaurant or gas station) because the campgrounds here are like the rest – truly basic – no frills – even at about $50.00/night. It will also be your first opportunity to spray down your RV and engines with a high-pressure wash at that fuel stop. This will cost a few bucks but will be a necessary and worthwhile effort. The coach (and car) will get really filthy with rarely a place to clean it. Some campgrounds in Alaska will let you wash your coach at your site.
Going up, head north from Tok (staying on the Alaska Highway) through Delta Junction. The Alaska Highway ends here. Get on the Glenn Highway through North Pole and into Fairbanks. The end of the Alaska Highway and visitor center is in Delta Junction and worth seeing. The next town, North Pole, is a good place to take a picture of the sign in front of the Post Office. Start the real “tour” of Alaska in Fairbanks.
Delta Junction is only 100 miles from Tok AND it’s another 100 miles to Fairbanks. You may want to boondock around Delta Junction depending on road construction and/or reservations in Fairbanks.
Fairbanks is a great town (small city with a small-town feel). There’s lots of restaurants, tons of touristy stuff to see/visit ranging from the original pipeline (you can walk around and actually touch it) to panning for gold to feeding caribou and seeing musk ox. Make reservations for Fairbanks as the campgrounds get busy. You will need a campground after several days of boondocking and time to recover from the days of driving. So it is ideal to plan to stay a week in Fairbanks to see the area and it will take this long. We enjoy the area immensely so staying about a week there is not a problem for us. Fairbanks is one of our favorite places in the state. Check my Alaska book (“RVing to Alaska”) for things to see here. We have done most/all of them and will do some (but not all) again. Fairbanks will be your first true tourist destination in the state. Just plan to relax and be a casual tourist here.
One really unusual tourist thing is you can get a one-day flight to Barrow (on the Arctic Ocean) from Fairbanks and back. We did this and it was good. You land, they have a guided tour of Barrow (town of about 5,000) and you fly back. You will definitely set foot inside the Arctic Circle but usually cannot put your finger in the Arctic Ocean because the ice is still out a few miles. Regardless of rumors, tourists cannot get to the Arctic Ocean in Prudhoe Bay (where all the oil is).