[yencabulator]

What requires human intervention depends on how good the self-checkout is, and how much the store is oriented toward "weird items".

Buying similar carts full of groceries from one of the nicer Walmarts I've ever seen, I never had a single issue with the self-checkout. Going to a Safeway self-checkout with more than 3 items, I am sure to get the thing complaining about the bag weighing mechanism and needing an assistant to unlock it.

I regularly buy $300-500 dollar carts full of stuff from Sam's Club, and scan everything on my phone at the moment I put it in the cart. No need to remove the items from the cart again at the checkout, just pay on your phone and push the cart as-is to your car. (Of course, Sam's is like Costco, and everything is pre-bundled, no weighing of produce required.)