Big Mac Revisited

Grace, Lupe and I go to the Stanford Medical Center in Berkeley so Grace can have a small skin cancer removed from her arm. A simple procedure requiring about 45 minutes and some stitches. Afterwards she wants McDonald's and so there we go. Neither of has had a Big Mac since I can remember (though we hit a Taco Bell on San Pablo last year after reading about Taco Bell's product r&d department in the New Yorker). She informs that the Big Mac is just not the same anymore (for me, it is always the same). 

What is different is that there are no counter-staff and a busy restaurant has a crew of like four people. What's a teenager to do for a summer job ?