Kenai Fjords was the 9th National Park that we visited. As its name suggest it is mainly a water park, so we were a bit limited. We did do the major hike up to Exit Glacier and the Harding Icefield, which was incredible. If you don't believe that global warming is a thing I suggest you take the trip up to see Exit Glacier. Look at where it was in 2010, 2005, etc. If that doesn't make you a believer then you are ignoring reality.
Kenai Fjords is also near the town of Seward and Seward is known for one of the coolest races in the world. The race is up and down Mount Marathon. The fastest racers go 2 mph up the hill and 12 down. It's about 3 miles there and back and is on my life bucket list.