if its really bad bring notecards. You get there first. Your first card says "I have a stutter. I think I have been mostly able to hid it over the phone." Second card says, "This is my backup, I get nervous on first dates. It might take a little bit to collect my voice back." (replace dates with meeting if you are not so direct) . From there on its up to you. Get caught on a word its not a big deal. Get caught in a stutter spiral, you have your out.