My name is easy beyond belief but people get it wrong ALL THE TIME. You'd think "Jane" is pretty safe, but especially at Starbucks it gets rewritten into a lot of other names like "Shane" or "Jayne" or "Jain". My now maiden name "Lee" is...well...."Li", "Le", "Leigh"..........I think one person almost got my new last name wrong but it was over the phone and a B vs V problem.
Even better is when I was at Disney World for part of my honeymoon. If you tell Disney employees you're celebrating an occasion, they'll give you a button for it - e.g. honeymoon, 1st visit, family reunion. One employee offered to customize my husband's and my very boring honeymoon buttons for us with our names. She asked my husband if he spelled his name (Kevin) "the way you expect to spell it". I got a button that said "with Keven" and didn't have the heart to tell her what was wrong with it.
BTW at my restaurant I used to use names and now I just use numbers. Numbers are way easier to remember and call out, and makes it harder for people to accidentally (or purposefully) take the wrong thing if they can't return the number card back.