I meticulously read labels on everything. I kind of have to since I can't just eat anything off the shelf - it's complicated.

But one thing I do is to be aware of how much room the cart/trolley/whatever is taking up. I much prefer to use a hand-basket or smaller cart if available. I'll also park the damn thing outside the aisle if there's room nearby, or next to my person parallel to the flow of traffic. Why gack up the whole lane?

At the same time, I also appreciate that a typical supermarket is an assault on the senses where even the neuro-normative struggle. It's not hard to find people that are clearly stuggling, doubling-back-and-forth through the whole market to complete their shopping list (just peek in the basket then consider where you are in the store). The frequency of this happening is kind of staggering.