Starting with the tour guide, he was wonderful. I was traveling with wife and 2 kids and he was always smiling, patient, adaptive and helpful. 5 stars. Second, talking bout the tour itself, I must say it is simply the best. I have traveled a lot, and been in different places (China Wall, Niagara, Florence, Rome, Kyoto, Volcanoes, etc) and I MUST say that this is the best natural experience of my life. No other National Park beats this one. Feels like you are in a different planet, full of natural beauty. If I would do just ONE thing in Anchorage, this would be the one. Don't miss it. You HAVE to go with a tour, the park administration doesn't let you go by yourself for safety reasons, so don't try to save money.