Pros
The atmosphere can be fun. Hours are flexible for school schedules and you can frequently get off for school events on the weekend if you ask far enough in advance. Also, depending on your club, call-ins aren't a huge deal.
Cons
You have to be able to keep up all of your numbers in membership renewals (which start being counted for or against you 6 weeks before members are due to renew), credit cards sales, and plus membership upgrades. You can lose your job over this or be marked as "in need of improvement" on evaluations to keep you from earning a raise repeatedly. There is no "section" on evaluations and write-ups for sales, but they can count it as not communicating to customers. And don't think they will move you if you're not doing well because more often than not, they leave you. Bottom line: Don't be a Sam's Club cashier if you cannot sell something, whether you think it is worth it or not. If you can though, it's rewarding for you.