Indeed.
Just the other day, I was at work and my shift was drawing to a close. It was maybe 9:15PM and a woman and her presumed husband came into the deserted lobby. I took their order and then the woman just kinda casually asked me if I would completely shut down the WiFi system because she is "electrohypersensitive" (she said something along those lines). Clearly, she's got something going on, otherwise she wouldn't know we have WiFi. I didn't really take her seriously and hoped that ignoring the problem would make it go away (works about 80% of the time).
Before their food was even prepared, she came back up the counter to ask when I'd do something about the WiFi. Trying to buy myself more time, I told her that I wasn't in any position to do something about it (which isn't a lie) and told her that I'd discuss it with my manager and we'd let her know later. She then started to get impatient saying that I better do something about it because the WiFi gives her a headache and forces her to wear a scarf on her head. Once again, I reiterated that I would talk to my manager and we would see what we could do about it. This time, I got the manager and told her about it. She kinda scoffed but told me that she didn't know how to disable the WiFi.
When I brought the food out, the woman was going hysterical. She was totally pissed off and asked why the WiFi was still on. I told her that I had talked to my manager about it and told her that nobody in the restaurant was in a position or possessed the knowhow to shut off the WiFi transmitter. She started telling me how she would have a legal right to sue us for not obeying her and taking her "request" seriously. Her husband kept trying to chime in lowkey for me to not worry about it and encouraged the woman to sit down and eat to little avail.
I quickly let my manager know and she was getting nervous. She had no idea how to disable the WiFi and that even if she did, it would render all our computers used for taking orders useless (they run on Windows 7 and update/keep time/etc with WiFi). The woman left the restaurant soon after with no further confrontation, but I really don't think that it'd be fair for us to shut down the entire restaurant because one picky woman with a weird uncommon problem wants to eat in the dining room.