Millions of people have, at some point in their lives, waited tables. Some only did it in college, or got out by sheer determination, good luck . . . or suicide. Others took it on as permanent employment. And many remain haunted by nightmare scenarios where they are the sole server in a restaurant packed with complaining patrons. For all those disenchanted current and former food service employees, Darron Cardosa has your back. His career began at...