Has anyone done an air tour to the Arctic circle? We have a free day in Fairbanks on July 14th, and I want to do this, but do not know which trip to take. Tours offerred by Princess include an Artic Circle air adventure that goes to the Koyukuk river, and another that visits a village near Ft. Yukon. Both are about 4-5 hours and the same price. Any advice will be greatly appreciated!