You'll get lots of negative comments from the independent RV owners who travel Alaska on their own BUT the main advantages of a caravan are: all of the planning, scheduling, reservations etc. are made by somebody else and all you have to do is follow the leader AND it is the most efficient way to see the sights in the shortest time. You also have the safety in having a Tailgunner who makes sure that everyone makes it to the next destination; not so when traveling alone.
You can still spend as much time as you want in researching an Alaskan trip which extends the enjoyment far beyond the time spent there.
We used Adventure Caravans for the Western Parks trip and would use them again BUT Alaska is too far for us Seniors!