In recent years there have been hassles about development and mining near Yellowstone National Park, the world's first national park, established 13 years before Banff. No matter what remedies are offered, they'll be both costly and controversial. For many people, a visit to a national park is akin to a religious experience. Don't act like an oaf, disturbing other visitors. Bears and other animals feed on fish.
National parks are rare places at a critical stage.
More than ever they need to be treated as such by everyone.