I work as a cashier at a grocery store. If I can do this, you should have no problem with this job!
At my job, I mentioned Asperger's to two people: my trainer when I first started there six months ago, and my assistant manager. My trainer wasn't too understanding, but the manager was more cool about it. I guess what reaction and feedback you get when you disclose Asperger's at a job depends on who you tell, so if you decide to do so, hopefully there will be different people you can tell (provided you get the job).
Other than that, good luck with your endeavor, and if you get the job, have fun with it!