With my interview I didn't do anything to prepare for if I stutter, and I didn't say a thing about it. My philosophy was if they don't hire because I have a stutter, than they won't keep me when they find out. In hindsight maybe I should of brought it to their attention as they may take it as an act of maturity. Customers is what I have the hardest time with, but most likely you won't be talking to them for very long. I'm trying to embrace my stutter with friends and family by using no substitution words and fighting through it, but with customers I always use tricks I've learned throughout the years to hide my stutter. Strictly because I am there to get a check and that's it, whatever makes me look better and eventually gets me a raise or promotion. Other people would probably say to embrace it at work as well. I hope this might help you out in some way. I know how you felt as I felt the same way, but knowing that you even had the strength to get up and get through interview will be satisfying. It was for me at least. Hope you land a job man.