In our area, Wal-Mart got rid of all the fabric departments several years ago. Then last summer they brought fabric back in one store.
Fabric is basically typical chain-store fabric, but no holiday fabrics. They also have some "special purchase" lines of very inexpensive and also very yucky (IMHO) fabric. They carry VIP, Springs, and Fabric Traditions and those you should have no problems with, should you buy them.
Service? And appearance? In my local store, this department is clearly unloved by the management. They didn't even get a proper sized cutting table for the staff to use. I think they put the department back in merely because an order came from "on high" and they plan on doing the absolute minimum. This is not to fault the few people who work in the fabric department. They are fine! It's a management problem that exists.