Exposed and vulnerable

I left my cell phone, aka social crutch, at home today, and boy howdy am I regretting that. I feel so naked and defenseless without it. What if someone needs to get hold of me? WHAT AM I GOING TO DO THEN? I've got plans to meet up with friends prior to the fundraiser mentioned below and in order to make sure that my whereabouts are known, because heaven forefend someone might have to do without me for one microsecond, I sent out a timeline of my estimated locations, times of arrival and departure, and ultimate destination. Be honest: is there any help for me?