Target near me has the same set up to get you down to the undergound parking. I've never had to use the cart escalator because my purchases there have't been large enough or awkward enough to require a cart. But maybe I should place a cart on the escalator just to be confident that I can make it work.
I hardly go shopping. What do I need? Not much. It is only entertaining to me if I don't really need anything and if I haven't been shopping in a long time so that the store stock is stuff I've never seen. If I need something, it isn't entertaining because I suddenly find that nothing quite suits me despite there being 573 styles of sneakers when I only need one pair.