I wouldn't worry about it, especially in California. There are hiring laws about people with disabilities. As long as you can perform most of the job functions they need you for... I would think you would have to stand for most of your shift, with exceptions of breaks. If that is a problem, then they might not have to hire you... I am not sure what the law exactly states.
As far as your job history, I think that depends on how you do on the "personality test" in the application and how your interview would go.