Dude, I've never met a single person that said no to free food. I doubt they're even human if they do. (or at least a really messed up person.)

How about in like... two days from now? Just ask for Wendy if you don't see me. Just do me a favor and don't freak out the customers. (a beat.) And only let a line form for autographs if you charge and compensate the cafe.