In circumstances like yours I always ask myself - would I be comfortable with what I am doing being on the front page of a newspaper or the top news story on TV/social media?So, I am the one making assumptions that nobody else needs to use them, yet you can assume, without it being mentioned, that they are for customers while they shop - despite direct evidence from Pod point, who own and run the facilites, to the contrary.
If the answer is no then I stop doing it.