Most of the good stuff has already been said, but I’ll add one more thing...you’re trying to do way too much in a short amount of time. Alaska is Vast with a capital V. Pick a region based on your interests and go from there.

Such as...

A. Focus on Fairbanks and Denali. Fairbanks is a very underrated destination if you’re into wilderness experiences, and also has the best weather in Alaska in the summer. In addition, it’s only about two hours from the Denali National Park entrance.

B. Focus on Anchorage and the Kenai Peninsula/Prince William Sound. This is more touristy than Fairbanks, as in there will be more tourist-focused activities. But, you could easily fill up a week or more just by renting a car/RV at ANC and seeing the sights.

C. Focus on southeast Alaska. The Alaska Marine Highway, while basic, is a fantastic way to see the coastal areas. You can hop from town to town and get a real slice of Alaskana that you aren’t going to get anywhere close to on a cruise ship.