If you visited Fairbanks and Denali first, then Talkeetna is a bit farther south a short distance off the main route. Anchorage is not far from Talkeetna. Anchorage is the major city (300,000+) in Alaska and comes with all the requisite problems—traffic, stop lights everywhere, pedestrians, and busy! There are some fascinating things to see so it’s definitely worthwhile to spend some time there plus the restaurants, shopping (if needed), and repairs (if needed). I always recommend a week there for the first-time visitor.
Anchorage seems to be the “odd” place in the state for RVers. There are lots of things to see but few places to stay in an RV. Actually, this is the same situation we have found with most major cities, i.e., it is often difficult to get close in to a major city and find someplace to stay in an RV—a decent campground.
On a previous trip, we tried one campground in Anchorage that was the pits—just awful. We actually left that campground after one night to go boondock. We learned about another commercial campground that looked reasonably nice (we drove by it and it did look nice) but other than staying miles out of the city, the choices were few when we last looked there.
JBER AFB (an Elmendorf Air Force Base and Fort Richardson combined base) actually borders Anchorage and they have a two (FAMCamps) campgrounds but Military ID or the equivalent is required. We boondock there as I am retired military and enjoy that privilege.
On our last trip, friends of ours wanted to spend a week in Anchorage and they were NOT military so they had to deal with the local campgrounds. They found one decent campground but (A) the RVs were packed in close to each other, (B) the campground was full and they were actually turning away those RVers that were just driving in every day, (C) it was not cheap, and (D) they were close (very close as in next to) a railroad track. Luckily, the trains did not pass by very often.
My recommendation is to stay 10-20-30 miles outside of Anchorage. A good example is in Palmer. There are nice campgrounds there and a good highway into Anchorage. You can take in the sights via day-trips in your car or truck. Of course it’s a bit more trouble but life will be a bit smoother, too. If you do stay in Anchorage and you do find a decent place to park your RV, let me know – please.