Pros
Some of the things I greatly enjoyed about working at Old Navy were my associates and helping people out. It was really nice making people smile as I worked the sales floor with enthusiasm. The facilities were decent...our store was brand new and was located in a brand new plaza, so that was nice. Some of my managers were really nice as well. Overall, if you're the type of person who is driven and passionate about sales, and working in a competitive sales environment, this is a great place for you to work. There is opportunity after a year or more for promotion, but that usually involves you devoting a large portion of you time to the company, and having a full-time position.
Cons
Keep in mind that Old Navy is a subsidiary of Gap Inc., and therefore is very corporate-minded. Some managers were nice, but overall, they all were mostly concerned about sales and furthering their careers. The Old Navy Card quota was pretty annoying - we had to meet a weekly quota for how many cards we got customers to sign up for. If you went too many weeks without meeting your quota (which was honestly a subjective process, customers didn't get ONC's with just anybody), you were put up for consideration of termination. Holidays are a nightmare, and company policies aren't really in place for efficient fitting room maintenance or keeping the sales floor tidy during busy spells.