Just a note re difficult names to understand. It happens to many of us even without surgery and with perfect pronunciation. My children and I always give a fake name when waiting for an order or reservation anyplace. We decided on "Thomas" because sometimes when we used different names, we would forget which name we used so when it was called out, we didn't recognize it. It saves having to spell it out. You could even say "Batman" and see if that gets you quicker service.