Or, y'know, leave the cell in your tent or your car or something.

The only year I kept a cell phone on my person at Pennsic was the year my best friend's mom was in palliative care and I expected the call any minute of, "Yeah, she's passed on. Time to come home for the funeral."

That's about what it would take for me to carry a cell phone at Pennsic, as opposed to just keeping one in my tent for late-night calls to my boyfriend. But then again, that's just me.