Pros
Hours were flexible, but that depends on the manager. I made some great friends and I enjoyed working with most of my coworkers. Interacting with customers could lead to great conversations, but be aware that some customers will take out a bad day on you. I received good training, and it didn't take long to get comfortable there.
Cons
You are paid a low wage, and after working there for a year you only receive a $0.20/hr raise. My store manager withheld my raise from me for four months. Managers played favorites when it came to assigning tasks and giving promotions. When customers were exceptionally rude to employees, management would break company policy to appease them, making the employees look bad for trying to uphold company policy. Management rarely came to the aid of a cashier who needed their assistance, and when they did they took a very long time. This caused the line to back up, customers to get exceedingly angry, and sometimes customers would simply leave. Some managers obsessively micromanaged employees. Each manager is responsible for a different department, but only some managers held their departments accountable for cleanliness and expirations. They would pull me out of my department to fix another department, and then scold me for not having finished the tasks in my department. Management gave more hours to people that they favored. They cut hours in half without any notice, and never gave any indication of when they would give more hours. Sometimes I would go a few months with only 20 hours or less when I had previously been working 35-40 hours. Because of this I was never given any benefits.