This experience was well worth it for us. It packed in a lot of awesome experiences into a short time. The transport from Anchorage worked well. After arrival, they provide boots that go over regular shoes to walk in the snow, so no need for special footwear. It was probably in the high 30's or 40's on the ice and close to 60 F at the Knik lodge. So, as described in their information, bringing thin gloves and hat, with fleece or down layers, was good. If it had been raining or windy it would have been pretty cold.
I was nervous about the helicopter ride because I get motion sick easily, but the ride was smooth with spectacular scenery. The helicopter seated six passengers, so they rotated who sat in front for the way there vs back. But even the view from the back middle was good and I could see between the front passengers well enough to enjoy it. The landscape is varied as it flies over green valleys, past rocky mountains, and over the glacier -- all in 15 minutes.
The dog sledding was fun. They rotate who stands on the runners and who sits, while the guide controls the dogs and sled. The dogs are very social -- more than I expected. They mentioned they socialize them to a wide variety of people intentionally. The puppies were adorable and enthusiastic to meet people.
I was impressed with the organization of the tour and how well designed it was to be a great experience. I agree with another review describing "Helicopter ride, walk on a glacier, and ride a dog sled -- all bucket list activities all in one friendly tour".