Thousands of RVers make the trip up the CAssiar or Alaxka Highway every year and EVERY ONE OF THEM uses either gasoline or diesel fuel. Yes there are plenty of places to purchase fuel but don't expect to have a CHOICE of stations in the smaller communities. Learn to drive on the top half of your fuel tank so if you find the occasional gas station is closed it won't be a problem for you.
Your time schedule is not going to leave you much time to see much of the state but having a week or two in Alaska is better than not going at all.
Good luck / Skip
