I've taken to using the dumb, low-tech option where possible to try to push back on our techno-dystopian future. Printing out boarding passes, using cash, asking for menus at places with QR codes on the napkins, etc.
Unfortunately, I think it's already impossible to attend major events without a phone, at least if it's a major event at a stadium. Smaller venues still send out emails with QR codes we can just print out.