That's awesome Carlisle, sounds like you're having an incredible time! I always tell people you have to get to Alaska at least once, truly unspeakable levels of beauty. How cool is Whittier, with the old one lane rail cave being the only way in or out of the town!? I remember feeling like we were in another world when we came out on the other side with the Caribbean-like turquois waters and the glaciers seemingly emanating right out from the water. If you get a chance, on the way to or from Denali hit up the small touristy village of Talkeetna, cool place. You can walk down to the river and get some incredible views of Denali towering over the landscape even though it's like 60 miles away. The daylight is always wild and it's not like it gets totally dark after sunset haha. I remember coming out of the bars at like 2am with my wife and it was still plenty light out, like a civil twilight. Sounds like you are getting nice classic Alaska weather, whereas when we were there they were having a record heat wave in which Anchorage hit 90 for the first time in its history. I would much rather have what you're having ha. Anyway, enjoy the rest of your trip and feel free to stop back in and let us know how things are going. Cheers!
Oh, almost forgot, Hatcher Pass is a place well worth stopping between Anchorage and Talkeetna. You can swim in a fresh mountain top lake one minute and then just a few steps away play in some snow, stunning.