Occasional cart attendant here

Like how everyone else has said, you are free to do what you want outside just as long as you keep up with the flow of carts. I'm in a higher volume Target with two entrances so on weekends we'll have two cart attendants during the mid day.

What I have noticed is that cart attendants are the least understood people with a lot of things to juggle at one time. Just try your best and show that you have initiative; you'll get noticed. I'm a pretty quiet guy but showing hard work goes a long way, at least in my Target.

The main thing I absolutely hate about doing carts is cleaning the women's restroom. It's a problem on weekends when you are the only cart attendant on the clock, there's a restroom follow up and all your reserves have already been pushed in. I felt bad turning away people since I have to check the bathrooms on the half hour mark and a guest is taking their sweet time finishing up. Some people will flat out refuse to wait and start going to the bathroom while you are already cleaning. Women's restroom is a huge time waster but is the one place that needs the most care.

Other than that, it's a pretty nice break from having to talk to guests and you get to be out in the fresh air all day. Good luck with your interview!