Warehouse hiring event in Pittsburgh this week - any advice?

I saw a flyer for warehouse hiring on the east side of Pittsburgh, with day and night shifts. I do not usually post, so bear with me. They said to bring ID and a work history, and some people were hired on the spot. What are the shifts like?

Thanks for writing this out. I went through something close to it 4 months ago, and it settled down once I kept a simple log of every call and form.