We went to Yellowstone and the Grand Tetons last summer. We saw one grizzly in Yellowstone, mama black bear and cubs in the Tetons and grizzly mama and cubs in the Tetons. We didn’t buy bear spray but saw some for rent in the cafe/gift shop area.
We took one of our best family trips ever to Yellowstone and the Tetons eight years ago this July. The week before we were there, a man was mauled and killed near the Yellowstone Falls area. A large area was off limits to hiking. All five of us carried cans of bear spray and holsters. We donated it all when we left Jackson, WY.